623564465 has 8 divisors (see below), whose sum is σ = 749946600. Its totient is φ = 497738752.

The previous prime is 623564453. The next prime is 623564483. The reversal of 623564465 is 564465326.

It is a happy number.

623564465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 17272336 + 606292129 = 4156^2 + 24623^2 .

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 623564465 - 2²⁰ = 622515889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136634 + ... + 141123.

It is an arithmetic number, because the mean of its divisors is an integer number (93743325).

Almost surely, 2^623564465 is an apocalyptic number.

It is an amenable number.

623564465 is a deficient number, since it is larger than the sum of its proper divisors (126382135).

623564465 is a wasteful number, since it uses less digits than its factorization.

623564465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278211.

The product of its digits is 518400, while the sum is 41.

The square root of 623564465 is about 24971.2727949538. The cubic root of 623564465 is about 854.3328767757.

The spelling of 623564465 in words is "six hundred twenty-three million, five hundred sixty-four thousand, four hundred sixty-five".