922640613 has 4 divisors (see below), whose sum is σ = 1230187488. Its totient is φ = 615093740.

The previous prime is 922640603. The next prime is 922640639. The reversal of 922640613 is 316046229.

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 922640613 - 2⁵ = 922640581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (922640603) 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, 153773433 + ... + 153773438.

It is an arithmetic number, because the mean of its divisors is an integer number (307546872).

Almost surely, 2^922640613 is an apocalyptic number.

It is an amenable number.

922640613 is a deficient number, since it is larger than the sum of its proper divisors (307546875).

922640613 is a wasteful number, since it uses less digits than its factorization.

922640613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307546874.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 922640613 is about 30374.9998024691. Note that the first 3 decimals coincide. The cubic root of 922640613 is about 973.5184557369.

The spelling of 922640613 in words is "nine hundred twenty-two million, six hundred forty thousand, six hundred thirteen".