621873480 has 64 divisors (see below), whose sum is σ = 1868106240. Its totient is φ = 165612032.

The previous prime is 621873443. The next prime is 621873491. The reversal of 621873480 is 84378126.

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, 99817 + ... + 105863.

It is an arithmetic number, because the mean of its divisors is an integer number (29189160).

Almost surely, 2^621873480 is an apocalyptic number.

621873480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

621873480 is an abundant number, since it is smaller than the sum of its proper divisors (1246232760).

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

621873480 is a wasteful number, since it uses less digits than its factorization.

621873480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918 (or 6914 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 621873480 is about 24937.3912027702. The cubic root of 621873480 is about 853.5599163661.

The spelling of 621873480 in words is "six hundred twenty-one million, eight hundred seventy-three thousand, four hundred eighty".