86885665808 has 20 divisors (see below), whose sum is σ = 168348302400. Its totient is φ = 43440942624.

The previous prime is 86885665787. The next prime is 86885665819. The reversal of 86885665808 is 80856658868.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 307541 + ... + 518027.

It is an arithmetic number, because the mean of its divisors is an integer number (8417415120).

Almost surely, 2^86885665808 is an apocalyptic number.

It is an amenable number.

86885665808 is a deficient number, since it is larger than the sum of its proper divisors (81462636592).

86885665808 is a wasteful number, since it uses less digits than its factorization.

86885665808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236294 (or 236288 counting only the distinct ones).

The product of its (nonzero) digits is 176947200, while the sum is 68.

The spelling of 86885665808 in words is "eighty-six billion, eight hundred eighty-five million, six hundred sixty-five thousand, eight hundred eight".