90660475 has 18 divisors (see below), whose sum is σ = 114668876. Its totient is φ = 71104800.

The previous prime is 90660463. The next prime is 90660491. The reversal of 90660475 is 57406609.

It is not a de Polignac number, because 90660475 - 2¹⁹ = 90136187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 69580 + ... + 70870.

Almost surely, 2^90660475 is an apocalyptic number.

90660475 is a deficient number, since it is larger than the sum of its proper divisors (24008401).

90660475 is a wasteful number, since it uses less digits than its factorization.

90660475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 90660475 is about 9521.5794383075. The cubic root of 90660475 is about 449.2340467910.

The spelling of 90660475 in words is "ninety million, six hundred sixty thousand, four hundred seventy-five".