90563602 has 4 divisors (see below), whose sum is σ = 135845406. Its totient is φ = 45281800.

The previous prime is 90563579. The next prime is 90563611. The reversal of 90563602 is 20636509.

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

It can be written as a sum of positive squares in only one way, i.e., 86881041 + 3682561 = 9321^2 + 1919^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22640899 + ... + 22640902.

Almost surely, 2^90563602 is an apocalyptic number.

90563602 is a deficient number, since it is larger than the sum of its proper divisors (45281804).

90563602 is a wasteful number, since it uses less digits than its factorization.

90563602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45281803.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 90563602 is about 9516.4910550055. The cubic root of 90563602 is about 449.0739838041.

The spelling of 90563602 in words is "ninety million, five hundred sixty-three thousand, six hundred two".