90373613 has 4 divisors (see below), whose sum is σ = 98589408. Its totient is φ = 82157820.

The previous prime is 90373609. The next prime is 90373667. The reversal of 90373613 is 31637309.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31637309 = 11 ⋅2876119.

It is a cyclic number.

It is not a de Polignac number, because 90373613 - 2² = 90373609 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 90373613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90373813) 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, 4107881 + ... + 4107902.

It is an arithmetic number, because the mean of its divisors is an integer number (24647352).

Almost surely, 2^90373613 is an apocalyptic number.

It is an amenable number.

90373613 is a deficient number, since it is larger than the sum of its proper divisors (8215795).

90373613 is a wasteful number, since it uses less digits than its factorization.

90373613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8215794.

The product of its (nonzero) digits is 10206, while the sum is 32.

The square root of 90373613 is about 9506.5037211374. The cubic root of 90373613 is about 448.7597337553.

The spelling of 90373613 in words is "ninety million, three hundred seventy-three thousand, six hundred thirteen".