623365002665 has 4 divisors (see below), whose sum is σ = 748038003204. Its totient is φ = 498692002128.

The previous prime is 623365002653. The next prime is 623365002679. The reversal of 623365002665 is 566200563326.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 475819901209 + 147545101456 = 689797^2 + 384116^2 .

It is a cyclic number.

It is not a de Polignac number, because 623365002665 - 2⁴ = 623365002649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62336500262 + ... + 62336500271.

It is an arithmetic number, because the mean of its divisors is an integer number (187009500801).

Almost surely, 2^623365002665 is an apocalyptic number.

It is an amenable number.

623365002665 is a deficient number, since it is larger than the sum of its proper divisors (124673000539).

623365002665 is a wasteful number, since it uses less digits than its factorization.

623365002665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124673000538.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 623365002665 in words is "six hundred twenty-three billion, three hundred sixty-five million, two thousand, six hundred sixty-five".