621031996 has 24 divisors (see below), whose sum is σ = 1176890624. Its totient is φ = 285042240.

The previous prime is 621031991. The next prime is 621031997. The reversal of 621031996 is 699130126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621031991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23580 + ... + 42403.

Almost surely, 2^621031996 is an apocalyptic number.

It is an amenable number.

621031996 is a deficient number, since it is larger than the sum of its proper divisors (555858628).

621031996 is a wasteful number, since it uses less digits than its factorization.

621031996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66181 (or 66179 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 621031996 is about 24920.5135581111. The cubic root of 621031996 is about 853.1747462590.

The spelling of 621031996 in words is "six hundred twenty-one million, thirty-one thousand, nine hundred ninety-six".