86664904 has 8 divisors (see below), whose sum is σ = 162496710. Its totient is φ = 43332448.

The previous prime is 86664901. The next prime is 86664917. The reversal of 86664904 is 40946668.

It can be written as a sum of positive squares in only one way, i.e., 84676804 + 1988100 = 9202^2 + 1410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (86664901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5416549 + ... + 5416564.

Almost surely, 2^86664904 is an apocalyptic number.

It is an amenable number.

86664904 is a deficient number, since it is larger than the sum of its proper divisors (75831806).

86664904 is a wasteful number, since it uses less digits than its factorization.

86664904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10833119 (or 10833115 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 86664904 is about 9309.3986916449. The cubic root of 86664904 is about 442.5351312187.

The spelling of 86664904 in words is "eighty-six million, six hundred sixty-four thousand, nine hundred four".