623968404 has 24 divisors (see below), whose sum is σ = 1457705760. Its totient is φ = 207735264.

The previous prime is 623968393. The next prime is 623968427. The reversal of 623968404 is 404869326.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21414 + ... + 41309.

It is an arithmetic number, because the mean of its divisors is an integer number (60737740).

Almost surely, 2^623968404 is an apocalyptic number.

It is an amenable number.

623968404 is an abundant number, since it is smaller than the sum of its proper divisors (833737356).

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

623968404 is a wasteful number, since it uses less digits than its factorization.

623968404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63559 (or 63557 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 623968404 is about 24979.3595594443. The cubic root of 623968404 is about 854.5173131342.

The spelling of 623968404 in words is "six hundred twenty-three million, nine hundred sixty-eight thousand, four hundred four".