90372664 has 32 divisors (see below), whose sum is σ = 178894800. Its totient is φ = 42681600.

The previous prime is 90372661. The next prime is 90372673. The reversal of 90372664 is 46627309.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90372661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68814 + ... + 70114.

Almost surely, 2^90372664 is an apocalyptic number.

It is an amenable number.

90372664 is a deficient number, since it is larger than the sum of its proper divisors (88522136).

90372664 is a wasteful number, since it uses less digits than its factorization.

90372664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 90372664 is about 9506.4538078087. The cubic root of 90372664 is about 448.7581629632.

The spelling of 90372664 in words is "ninety million, three hundred seventy-two thousand, six hundred sixty-four".