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6871013886 = 2311372813683
BaseRepresentation
bin1100110011000101…
…10101100111111110
3122201212000200002210
412121202311213332
5103032434421021
63053445401250
7332161440312
oct63142654776
918655020083
106871013886
112a06565480
1213b9109226
13856683ab9
14492781b42
152a333ae76
hex1998b59fe

6871013886 has 32 divisors (see below), whose sum is σ = 15396478848. Its totient is φ = 2025851040.

The previous prime is 6871013857. The next prime is 6871013887. The reversal of 6871013886 is 6883101786.

6871013886 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6871013887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1404400 + ... + 1409283.

It is an arithmetic number, because the mean of its divisors is an integer number (481139964).

Almost surely, 26871013886 is an apocalyptic number.

6871013886 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6871013886 is an abundant number, since it is smaller than the sum of its proper divisors (8525464962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6871013886 is a wasteful number, since it uses less digits than its factorization.

6871013886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813736.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 6871013886 is about 82891.5791018605. The cubic root of 6871013886 is about 1901.1086683756.

The spelling of 6871013886 in words is "six billion, eight hundred seventy-one million, thirteen thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 11 22 33 37 66 74 111 222 407 814 1221 2442 2813683 5627366 8441049 16882098 30950513 61901026 92851539 104106271 185703078 208212542 312318813 624637626 1145168981 2290337962 3435506943 6871013886