90502613 has 8 divisors (see below), whose sum is σ = 91699200. Its totient is φ = 89313840.

The previous prime is 90502603. The next prime is 90502627. The reversal of 90502613 is 31620509.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90502613 - 2¹⁰ = 90501589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90502603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23483 + ... + 27063.

It is an arithmetic number, because the mean of its divisors is an integer number (11462400).

Almost surely, 2^90502613 is an apocalyptic number.

It is an amenable number.

90502613 is a deficient number, since it is larger than the sum of its proper divisors (1196587).

90502613 is a wasteful number, since it uses less digits than its factorization.

90502613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 90502613 is about 9513.2861304599. The cubic root of 90502613 is about 448.9731532899.

The spelling of 90502613 in words is "ninety million, five hundred two thousand, six hundred thirteen".