90608659 has 4 divisors (see below), whose sum is σ = 91004560. Its totient is φ = 90212760.

The previous prime is 90608593. The next prime is 90608669. The reversal of 90608659 is 95680609.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90608659 - 2²³ = 82220051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90608669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197607 + ... + 198064.

It is an arithmetic number, because the mean of its divisors is an integer number (22751140).

Almost surely, 2^90608659 is an apocalyptic number.

90608659 is a deficient number, since it is larger than the sum of its proper divisors (395901).

90608659 is a wasteful number, since it uses less digits than its factorization.

90608659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395900.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 90608659 is about 9518.8580722690. The cubic root of 90608659 is about 449.1484455502.

The spelling of 90608659 in words is "ninety million, six hundred eight thousand, six hundred fifty-nine".