623686264 has 8 divisors (see below), whose sum is σ = 1169411760. Its totient is φ = 311843128.

The previous prime is 623686247. The next prime is 623686313. The reversal of 623686264 is 462686326.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 623686264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38980384 + ... + 38980399.

It is an arithmetic number, because the mean of its divisors is an integer number (146176470).

Almost surely, 2^623686264 is an apocalyptic number.

It is an amenable number.

623686264 is a deficient number, since it is larger than the sum of its proper divisors (545725496).

623686264 is a wasteful number, since it uses less digits than its factorization.

623686264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77960789 (or 77960785 counting only the distinct ones).

The product of its digits is 497664, while the sum is 43.

The square root of 623686264 is about 24973.7114582515. The cubic root of 623686264 is about 854.3884979246.

The spelling of 623686264 in words is "six hundred twenty-three million, six hundred eighty-six thousand, two hundred sixty-four".