623875660164 has 63 divisors (see below), whose sum is σ = 1637036704807. Its totient is φ = 207944335944.

The previous prime is 623875660151. The next prime is 623875660181. The reversal of 623875660164 is 461066578326.

The square root of 623875660164 is 789858.

It is a perfect power (a square), and thus also a powerful number.

623875660164 is a `hidden beast` number, since 6 + 23 + 8 + 7 + 5 + 6 + 601 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623875660164.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 42645019 + ... + 42659645.

Almost surely, 2^623875660164 is an apocalyptic number.

623875660164 is the 789858-th square number.

It is an amenable number.

623875660164 is an abundant number, since it is smaller than the sum of its proper divisors (1013161044643).

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

623875660164 is an frugal number, since it uses more digits than its factorization.

623875660164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29276 (or 14632 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 623875660164 in words is "six hundred twenty-three billion, eight hundred seventy-five million, six hundred sixty thousand, one hundred sixty-four".