623612664 has 48 divisors (see below), whose sum is σ = 1693481400. Its totient is φ = 207313344.

The previous prime is 623612659. The next prime is 623612677. The reversal of 623612664 is 466216326.

623612664 is a `hidden beast` number, since 623 + 6 + 1 + 26 + 6 + 4 = 666.

623612664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15862 + ... + 38714.

Almost surely, 2^623612664 is an apocalyptic number.

It is an amenable number.

623612664 is an abundant number, since it is smaller than the sum of its proper divisors (1069868736).

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

623612664 is a wasteful number, since it uses less digits than its factorization.

623612664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23244 (or 23237 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 623612664 is about 24972.2378652775. The cubic root of 623612664 is about 854.3548883622.

It can be divided in two parts, 62361 and 2664, that added together give a square (65025 = 255²).

The spelling of 623612664 in words is "six hundred twenty-three million, six hundred twelve thousand, six hundred sixty-four".