621614964 has 12 divisors (see below), whose sum is σ = 1450434944. Its totient is φ = 207204984.

The previous prime is 621614957. The next prime is 621614989. The reversal of 621614964 is 469416126.

It is a tau number, because it is divible by the number of its divisors (12).

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, 25900612 + ... + 25900635.

Almost surely, 2^621614964 is an apocalyptic number.

It is an amenable number.

621614964 is an abundant number, since it is smaller than the sum of its proper divisors (828819980).

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

621614964 is a wasteful number, since it uses less digits than its factorization.

621614964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51801254 (or 51801252 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 621614964 is about 24932.2073631678. The cubic root of 621614964 is about 853.4416235591.

The spelling of 621614964 in words is "six hundred twenty-one million, six hundred fourteen thousand, nine hundred sixty-four".