623316156 has 12 divisors (see below), whose sum is σ = 1454404392. Its totient is φ = 207772048.

The previous prime is 623316137. The next prime is 623316157. The reversal of 623316156 is 651613326.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623316157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25971495 + ... + 25971518.

It is an arithmetic number, because the mean of its divisors is an integer number (121200366).

Almost surely, 2^623316156 is an apocalyptic number.

It is an amenable number.

623316156 is an abundant number, since it is smaller than the sum of its proper divisors (831088236).

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

623316156 is a wasteful number, since it uses less digits than its factorization.

623316156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51943020 (or 51943018 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 623316156 is about 24966.3004067483. The cubic root of 623316156 is about 854.2194606983.

The spelling of 623316156 in words is "six hundred twenty-three million, three hundred sixteen thousand, one hundred fifty-six".