86656520 has 32 divisors (see below), whose sum is σ = 195436800. Its totient is φ = 34580928.

The previous prime is 86656513. The next prime is 86656543. The reversal of 86656520 is 2565668.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16361 + ... + 20999.

It is an arithmetic number, because the mean of its divisors is an integer number (6107400).

Almost surely, 2^86656520 is an apocalyptic number.

It is an amenable number.

86656520 is an abundant number, since it is smaller than the sum of its proper divisors (108780280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86656520 is a wasteful number, since it uses less digits than its factorization.

86656520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117 (or 5113 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 86656520 is about 9308.9483831419. The cubic root of 86656520 is about 442.5208604123.

The spelling of 86656520 in words is "eighty-six million, six hundred fifty-six thousand, five hundred twenty".