90635321 has 4 divisors (see below), whose sum is σ = 103583232. Its totient is φ = 77687412.

The previous prime is 90635299. The next prime is 90635327. The reversal of 90635321 is 12353609.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90635321 is a prime.

It is a super-2 number, since 2×90635321² = 16429522825546082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90635327) 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, 6473945 + ... + 6473958.

It is an arithmetic number, because the mean of its divisors is an integer number (25895808).

Almost surely, 2^90635321 is an apocalyptic number.

It is an amenable number.

90635321 is a deficient number, since it is larger than the sum of its proper divisors (12947911).

90635321 is a wasteful number, since it uses less digits than its factorization.

90635321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947910.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 90635321 is about 9520.2584523741. The cubic root of 90635321 is about 449.1924958710.

The spelling of 90635321 in words is "ninety million, six hundred thirty-five thousand, three hundred twenty-one".