90580631 has 4 divisors (see below), whose sum is σ = 90903264. Its totient is φ = 90258000.

The previous prime is 90580627. The next prime is 90580697. The reversal of 90580631 is 13608509.

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 90580631 - 2² = 90580627 is a prime.

It is a super-2 number, since 2×90580631² = 16409701424716322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90580331) 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, 160895 + ... + 161456.

It is an arithmetic number, because the mean of its divisors is an integer number (22725816).

Almost surely, 2^90580631 is an apocalyptic number.

90580631 is a deficient number, since it is larger than the sum of its proper divisors (322633).

90580631 is a wasteful number, since it uses less digits than its factorization.

90580631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322632.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 90580631 is about 9517.3857229809. The cubic root of 90580631 is about 449.1021290392.

The spelling of 90580631 in words is "ninety million, five hundred eighty thousand, six hundred thirty-one".