621083984 has 40 divisors (see below), whose sum is σ = 1276692840. Its totient is φ = 291688448.

The previous prime is 621083971. The next prime is 621083999. The reversal of 621083984 is 489380126.

It can be written as a sum of positive squares in 4 ways, for example, as 165688384 + 455395600 = 12872^2 + 21340^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152762 + ... + 156774.

It is an arithmetic number, because the mean of its divisors is an integer number (31917321).

Almost surely, 2^621083984 is an apocalyptic number.

It is an amenable number.

621083984 is an abundant number, since it is smaller than the sum of its proper divisors (655608856).

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

621083984 is a wasteful number, since it uses less digits than its factorization.

621083984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4607 (or 4601 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 621083984 is about 24921.5566126998. The cubic root of 621083984 is about 853.1985526605.

The spelling of 621083984 in words is "six hundred twenty-one million, eighty-three thousand, nine hundred eighty-four".