623990568 has 64 divisors (see below), whose sum is σ = 1632499200. Its totient is φ = 198512640.

The previous prime is 623990561. The next prime is 623990617. The reversal of 623990568 is 865099326.

It is not an unprimeable number, because it can be changed into a prime (623990561) by changing a digit.

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, 48568 + ... + 60056.

It is an arithmetic number, because the mean of its divisors is an integer number (25507800).

Almost surely, 2^623990568 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 623990568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816249600).

623990568 is an abundant number, since it is smaller than the sum of its proper divisors (1008508632).

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

623990568 is a wasteful number, since it uses less digits than its factorization.

623990568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11602 (or 11598 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 623990568 is about 24979.8032017868. The cubic root of 623990568 is about 854.5274307926.

The spelling of 623990568 in words is "six hundred twenty-three million, nine hundred ninety thousand, five hundred sixty-eight".