90604988 has 6 divisors (see below), whose sum is σ = 158558736. Its totient is φ = 45302492.

The previous prime is 90604919. The next prime is 90604993. The reversal of 90604988 is 88940609.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11325620 + ... + 11325627.

It is an arithmetic number, because the mean of its divisors is an integer number (26426456).

Almost surely, 2^90604988 is an apocalyptic number.

It is an amenable number.

90604988 is a deficient number, since it is larger than the sum of its proper divisors (67953748).

90604988 is a wasteful number, since it uses less digits than its factorization.

90604988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22651251 (or 22651249 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 90604988 is about 9518.6652425642. The cubic root of 90604988 is about 449.1423797348.

The spelling of 90604988 in words is "ninety million, six hundred four thousand, nine hundred eighty-eight".