Search a number
-
+
8713885 = 513712721
BaseRepresentation
bin100001001111…
…011010011101
3121101201012111
4201033122131
54212321020
6510434021
7134031625
oct41173235
917351174
108713885
114a11964
122b02911
131a6135b
14122b885
15b71d5a
hex84f69d

8713885 has 8 divisors (see below), whose sum is σ = 10533816. Its totient is φ = 6919680.

The previous prime is 8713879. The next prime is 8713897. The reversal of 8713885 is 5883178.

It can be written as a sum of positive squares in 4 ways, for example, as 2617924 + 6095961 = 1618^2 + 2469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8713885 - 29 = 8713373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5676 + ... + 7045.

It is an arithmetic number, because the mean of its divisors is an integer number (1316727).

Almost surely, 28713885 is an apocalyptic number.

It is an amenable number.

8713885 is a deficient number, since it is larger than the sum of its proper divisors (1819931).

8713885 is a wasteful number, since it uses less digits than its factorization.

8713885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12863.

The product of its digits is 53760, while the sum is 40.

The square root of 8713885 is about 2951.9290303122. The cubic root of 8713885 is about 205.7803688662.

The spelling of 8713885 in words is "eight million, seven hundred thirteen thousand, eight hundred eighty-five".

Divisors: 1 5 137 685 12721 63605 1742777 8713885