621583923676 has 6 divisors (see below), whose sum is σ = 1087771866440. Its totient is φ = 310791961836.

The previous prime is 621583923647. The next prime is 621583923677. The reversal of 621583923676 is 676329385126.

It is a self number, because there is not a number n which added to its sum of digits gives 621583923676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621583923677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77697990456 + ... + 77697990463.

Almost surely, 2^621583923676 is an apocalyptic number.

It is an amenable number.

621583923676 is a deficient number, since it is larger than the sum of its proper divisors (466187942764).

621583923676 is a wasteful number, since it uses less digits than its factorization.

621583923676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155395980923 (or 155395980921 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 58.

The spelling of 621583923676 in words is "six hundred twenty-one billion, five hundred eighty-three million, nine hundred twenty-three thousand, six hundred seventy-six".