87657165 has 24 divisors (see below), whose sum is σ = 159937440. Its totient is φ = 44289504.

The previous prime is 87657149. The next prime is 87657173. The reversal of 87657165 is 56175678.

87657165 is a `hidden beast` number, since 8 + 76 + 571 + 6 + 5 = 666.

It is not a de Polignac number, because 87657165 - 2⁴ = 87657149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 87657165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50407 + ... + 52116.

It is an arithmetic number, because the mean of its divisors is an integer number (6664060).

Almost surely, 2^87657165 is an apocalyptic number.

It is an amenable number.

87657165 is a deficient number, since it is larger than the sum of its proper divisors (72280275).

87657165 is a wasteful number, since it uses less digits than its factorization.

87657165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102553 (or 102550 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 87657165 is about 9362.5405206066. The cubic root of 87657165 is about 444.2176465196.

The spelling of 87657165 in words is "eighty-seven million, six hundred fifty-seven thousand, one hundred sixty-five".