621608432 has 20 divisors (see below), whose sum is σ = 1220866800. Its totient is φ = 306546048.

The previous prime is 621608413. The next prime is 621608441. The reversal of 621608432 is 234806126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264932 + ... + 267267.

It is an arithmetic number, because the mean of its divisors is an integer number (61043340).

Almost surely, 2^621608432 is an apocalyptic number.

It is an amenable number.

621608432 is a deficient number, since it is larger than the sum of its proper divisors (599258368).

621608432 is a wasteful number, since it uses less digits than its factorization.

621608432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532280 (or 532274 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 621608432 is about 24932.0763676032. The cubic root of 621608432 is about 853.4386341951.

The spelling of 621608432 in words is "six hundred twenty-one million, six hundred eight thousand, four hundred thirty-two".