90657670 has 16 divisors (see below), whose sum is σ = 163479888. Its totient is φ = 36197280.

The previous prime is 90657599. The next prime is 90657691. The reversal of 90657670 is 7675609.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2229 + ... + 13648.

It is an arithmetic number, because the mean of its divisors is an integer number (10217493).

Almost surely, 2^90657670 is an apocalyptic number.

90657670 is a deficient number, since it is larger than the sum of its proper divisors (72822218).

90657670 is a wasteful number, since it uses less digits than its factorization.

90657670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16455.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 90657670 is about 9521.4321401772. The cubic root of 90657670 is about 449.2294137007.

The spelling of 90657670 in words is "ninety million, six hundred fifty-seven thousand, six hundred seventy".