90580613 has 4 divisors (see below), whose sum is σ = 90601920. Its totient is φ = 90559308.

The previous prime is 90580597. The next prime is 90580627. The reversal of 90580613 is 31608509.

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 not a de Polignac number, because 90580613 - 2⁴ = 90580597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90580613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90580013) 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, 1853 + ... + 13586.

It is an arithmetic number, because the mean of its divisors is an integer number (22650480).

Almost surely, 2^90580613 is an apocalyptic number.

It is an amenable number.

90580613 is a deficient number, since it is larger than the sum of its proper divisors (21307).

90580613 is a wasteful number, since it uses less digits than its factorization.

90580613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21306.

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

The square root of 90580613 is about 9517.3847773430. The cubic root of 90580613 is about 449.1020992909.

It can be divided in two parts, 905 and 80613, that added together give a palindrome (81518).

The spelling of 90580613 in words is "ninety million, five hundred eighty thousand, six hundred thirteen".