621893676 has 24 divisors (see below), whose sum is σ = 1451976624. Its totient is φ = 207170560.

The previous prime is 621893647. The next prime is 621893681. The reversal of 621893676 is 676398126.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5596 + ... + 35708.

It is an arithmetic number, because the mean of its divisors is an integer number (60499026).

Almost surely, 2^621893676 is an apocalyptic number.

It is an amenable number.

621893676 is an abundant number, since it is smaller than the sum of its proper divisors (830082948).

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

621893676 is a wasteful number, since it uses less digits than its factorization.

621893676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31841 (or 31839 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 621893676 is about 24937.7961335800. The cubic root of 621893676 is about 853.5691563536.

The spelling of 621893676 in words is "six hundred twenty-one million, eight hundred ninety-three thousand, six hundred seventy-six".