623390568 has 64 divisors (see below), whose sum is σ = 1603929600. Its totient is φ = 201784320.

The previous prime is 623390539. The next prime is 623390623. The reversal of 623390568 is 865093326.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227913 + ... + 230631.

It is an arithmetic number, because the mean of its divisors is an integer number (25061400).

Almost surely, 2^623390568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623390568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (801964800).

623390568 is an abundant number, since it is smaller than the sum of its proper divisors (980539032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623390568 is a wasteful number, since it uses less digits than its factorization.

623390568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002 (or 2998 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 623390568 is about 24967.7906111053. The cubic root of 623390568 is about 854.2534518217.

The spelling of 623390568 in words is "six hundred twenty-three million, three hundred ninety thousand, five hundred sixty-eight".