621102044 has 24 divisors (see below), whose sum is σ = 1102051440. Its totient is φ = 306256896.

The previous prime is 621102037. The next prime is 621102059. The reversal of 621102044 is 440201126.

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, 94844 + ... + 101180.

It is an arithmetic number, because the mean of its divisors is an integer number (45918810).

Almost surely, 2^621102044 is an apocalyptic number.

It is an amenable number.

621102044 is a deficient number, since it is larger than the sum of its proper divisors (480949396).

621102044 is a wasteful number, since it uses less digits than its factorization.

621102044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677 (or 6675 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 621102044 is about 24921.9189469832. The cubic root of 621102044 is about 853.2068224044.

The spelling of 621102044 in words is "six hundred twenty-one million, one hundred two thousand, forty-four".