90102664 has 8 divisors (see below), whose sum is σ = 168942510. Its totient is φ = 45051328.

The previous prime is 90102653. The next prime is 90102721. The reversal of 90102664 is 46620109.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 4169764 = 9270^2 + 2042^2 .

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5631409 + ... + 5631424.

Almost surely, 2^90102664 is an apocalyptic number.

It is an amenable number.

90102664 is a deficient number, since it is larger than the sum of its proper divisors (78839846).

90102664 is a wasteful number, since it uses less digits than its factorization.

90102664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262839 (or 11262835 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 90102664 is about 9492.2423062204. The cubic root of 90102664 is about 448.3108095108.

The spelling of 90102664 in words is "ninety million, one hundred two thousand, six hundred sixty-four".