623426566 has 32 divisors (see below), whose sum is σ = 1106183232. Its totient is φ = 257955840.

The previous prime is 623426561. The next prime is 623426581. The reversal of 623426566 is 665624326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623426561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50080 + ... + 61276.

It is an arithmetic number, because the mean of its divisors is an integer number (34568226).

Almost surely, 2^623426566 is an apocalyptic number.

623426566 is a deficient number, since it is larger than the sum of its proper divisors (482756666).

623426566 is a wasteful number, since it uses less digits than its factorization.

623426566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11344.

The product of its digits is 311040, while the sum is 40.

The square root of 623426566 is about 24968.5114894741. The cubic root of 623426566 is about 854.2698946028.

The spelling of 623426566 in words is "six hundred twenty-three million, four hundred twenty-six thousand, five hundred sixty-six".