87456812 has 12 divisors (see below), whose sum is σ = 153146616. Its totient is φ = 43700640.

The previous prime is 87456793. The next prime is 87456881. The reversal of 87456812 is 21865478.

It is a self number, because there is not a number n which added to its sum of digits gives 87456812.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (12762218).

Almost surely, 2^87456812 is an apocalyptic number.

It is an amenable number.

87456812 is a deficient number, since it is larger than the sum of its proper divisors (65689804).

87456812 is a wasteful number, since it uses less digits than its factorization.

87456812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13888 (or 13886 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 87456812 is about 9351.8346863062. The cubic root of 87456812 is about 443.8789473307.

The spelling of 87456812 in words is "eighty-seven million, four hundred fifty-six thousand, eight hundred twelve".