86957308665 has 48 divisors (see below), whose sum is σ = 157303570320. Its totient is φ = 44381675520.

The previous prime is 86957308643. The next prime is 86957308667. The reversal of 86957308665 is 56680375968.

It can be written as a sum of positive squares in 8 ways, for example, as 21158902521 + 65798406144 = 145461^2 + 256512^2 .

It is not a de Polignac number, because 86957308665 - 2⁹ = 86957308153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86957308667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147376 + ... + 442305.

It is an arithmetic number, because the mean of its divisors is an integer number (3277157715).

Almost surely, 2^86957308665 is an apocalyptic number.

It is an amenable number.

86957308665 is a deficient number, since it is larger than the sum of its proper divisors (70346261655).

86957308665 is a wasteful number, since it uses less digits than its factorization.

86957308665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589834 (or 589831 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 86957308665 in words is "eighty-six billion, nine hundred fifty-seven million, three hundred eight thousand, six hundred sixty-five".