623604164 has 6 divisors (see below), whose sum is σ = 1091307294. Its totient is φ = 311802080.

The previous prime is 623604161. The next prime is 623604167. The reversal of 623604164 is 461406326.

It is an interprime number because it is at equal distance from previous prime (623604161) and next prime (623604167).

It can be written as a sum of positive squares in only one way, i.e., 586027264 + 37576900 = 24208^2 + 6130^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 623604164.

It is not an unprimeable number, because it can be changed into a prime (623604161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77950517 + ... + 77950524.

It is an arithmetic number, because the mean of its divisors is an integer number (181884549).

Almost surely, 2^623604164 is an apocalyptic number.

It is an amenable number.

623604164 is a deficient number, since it is larger than the sum of its proper divisors (467703130).

623604164 is a wasteful number, since it uses less digits than its factorization.

623604164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155901045 (or 155901043 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 623604164 is about 24972.0676757052. The cubic root of 623604164 is about 854.3510066527.

The spelling of 623604164 in words is "six hundred twenty-three million, six hundred four thousand, one hundred sixty-four".