624921406 has 16 divisors (see below), whose sum is σ = 970567200. Its totient is φ = 301418208.

The previous prime is 624921397. The next prime is 624921413. The reversal of 624921406 is 604129426.

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, 71440 + ... + 79708.

It is an arithmetic number, because the mean of its divisors is an integer number (60660450).

Almost surely, 2^624921406 is an apocalyptic number.

624921406 is a deficient number, since it is larger than the sum of its proper divisors (345645794).

624921406 is a wasteful number, since it uses less digits than its factorization.

624921406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9603.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 624921406 is about 24998.4280705808. The cubic root of 624921406 is about 854.9521334761.

The spelling of 624921406 in words is "six hundred twenty-four million, nine hundred twenty-one thousand, four hundred six".