8687904 has 24 divisors (see below), whose sum is σ = 22806000. Its totient is φ = 2895936.

The previous prime is 8687891. The next prime is 8687911. The reversal of 8687904 is 4097868.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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, 45154 + ... + 45345.

It is an arithmetic number, because the mean of its divisors is an integer number (950250).

Almost surely, 2^8687904 is an apocalyptic number.

It is an amenable number.

8687904 is an abundant number, since it is smaller than the sum of its proper divisors (14118096).

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

8687904 is a wasteful number, since it uses less digits than its factorization.

8687904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90512 (or 90504 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8687904 is about 2947.5250635067. The cubic root of 8687904 is about 205.5756495358.

It can be divided in two parts, 8687 and 904, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 8687904 in words is "eight million, six hundred eighty-seven thousand, nine hundred four".