621306004 has 48 divisors (see below), whose sum is σ = 1322032320. Its totient is φ = 251804160.

The previous prime is 621305989. The next prime is 621306017. The reversal of 621306004 is 400603126.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7647 + ... + 36070.

It is an arithmetic number, because the mean of its divisors is an integer number (27542340).

Almost surely, 2^621306004 is an apocalyptic number.

It is an amenable number.

621306004 is an abundant number, since it is smaller than the sum of its proper divisors (700726316).

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

621306004 is a wasteful number, since it uses less digits than its factorization.

621306004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43768 (or 43766 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 621306004 is about 24926.0105913481. The cubic root of 621306004 is about 853.3002053518.

The spelling of 621306004 in words is "six hundred twenty-one million, three hundred six thousand, four".