Search a number
-
+
2068203687 = 311479130841
BaseRepresentation
bin111101101000110…
…0100100010100111
312100010200122002120
41323101210202213
513213430004222
6541120441023
7102152304234
oct17321444247
95303618076
102068203687
119714a1050
12498779173
1326c637384
1415897078b
15c188615c
hex7b4648a7

2068203687 has 16 divisors (see below), whose sum is σ = 3014599680. Its totient is φ = 1250830400.

The previous prime is 2068203673. The next prime is 2068203707. The reversal of 2068203687 is 7863028602.

It is a cyclic number.

It is not a de Polignac number, because 2068203687 - 24 = 2068203671 is a prime.

It is a Smith number, since the sum of its digits (42) 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 (2068203607) 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, 49614 + ... + 81227.

It is an arithmetic number, because the mean of its divisors is an integer number (188412480).

Almost surely, 22068203687 is an apocalyptic number.

2068203687 is a deficient number, since it is larger than the sum of its proper divisors (946395993).

2068203687 is a wasteful number, since it uses less digits than its factorization.

2068203687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131334.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 2068203687 is about 45477.5074844697. The cubic root of 2068203687 is about 1274.0831418409.

The spelling of 2068203687 in words is "two billion, sixty-eight million, two hundred three thousand, six hundred eighty-seven".

Divisors: 1 3 11 33 479 1437 5269 15807 130841 392523 1439251 4317753 62672839 188018517 689401229 2068203687