621327916 has 48 divisors (see below), whose sum is σ = 1228631040. Its totient is φ = 272376000.

The previous prime is 621327913. The next prime is 621327919. The reversal of 621327916 is 619723126.

It is an interprime number because it is at equal distance from previous prime (621327913) and next prime (621327919).

It is not an unprimeable number, because it can be changed into a prime (621327913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530011 + ... + 531181.

It is an arithmetic number, because the mean of its divisors is an integer number (25596480).

Almost surely, 2^621327916 is an apocalyptic number.

It is an amenable number.

621327916 is a deficient number, since it is larger than the sum of its proper divisors (607303124).

621327916 is a wasteful number, since it uses less digits than its factorization.

621327916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606 (or 1604 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 621327916 is about 24926.4501283275. The cubic root of 621327916 is about 853.3102365303.

The spelling of 621327916 in words is "six hundred twenty-one million, three hundred twenty-seven thousand, nine hundred sixteen".