621966352 has 40 divisors (see below), whose sum is σ = 1458228096. Its totient is φ = 250876416.

The previous prime is 621966347. The next prime is 621966407. The reversal of 621966352 is 253669126.

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, 161428 + ... + 165235.

Almost surely, 2^621966352 is an apocalyptic number.

It is an amenable number.

621966352 is an abundant number, since it is smaller than the sum of its proper divisors (836261744).

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

621966352 is a wasteful number, since it uses less digits than its factorization.

621966352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326695 (or 326689 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 621966352 is about 24939.2532366148. The cubic root of 621966352 is about 853.6024051109.

The spelling of 621966352 in words is "six hundred twenty-one million, nine hundred sixty-six thousand, three hundred fifty-two".