623356564 has 12 divisors (see below), whose sum is σ = 1091114388. Its totient is φ = 311609600.

The previous prime is 623356553. The next prime is 623356571. The reversal of 623356564 is 465653326.

It can be written as a sum of positive squares in 2 ways, for example, as 424772100 + 198584464 = 20610^2 + 14092^2 .

It is a congruent 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, 7044 + ... + 36004.

It is an arithmetic number, because the mean of its divisors is an integer number (90926199).

Almost surely, 2^623356564 is an apocalyptic number.

It is an amenable number.

623356564 is a deficient number, since it is larger than the sum of its proper divisors (467757824).

623356564 is a wasteful number, since it uses less digits than its factorization.

623356564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34346 (or 34344 counting only the distinct ones).

The product of its digits is 388800, while the sum is 40.

The square root of 623356564 is about 24967.1096444903. The cubic root of 623356564 is about 854.2379192572.

The spelling of 623356564 in words is "six hundred twenty-three million, three hundred fifty-six thousand, five hundred sixty-four".