90612904 has 8 divisors (see below), whose sum is σ = 169899210. Its totient is φ = 45306448.

The previous prime is 90612901. The next prime is 90612913. The reversal of 90612904 is 40921609.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90288004 + 324900 = 9502^2 + 570^2 .

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 (90612901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5663299 + ... + 5663314.

Almost surely, 2^90612904 is an apocalyptic number.

It is an amenable number.

90612904 is a deficient number, since it is larger than the sum of its proper divisors (79286306).

90612904 is a wasteful number, since it uses less digits than its factorization.

90612904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11326619 (or 11326615 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90612904 is about 9519.0810480844. The cubic root of 90612904 is about 449.1554596164.

The spelling of 90612904 in words is "ninety million, six hundred twelve thousand, nine hundred four".