621670100066 has 8 divisors (see below), whose sum is σ = 939847710720. Its totient is φ = 308387529828.

The previous prime is 621670100059. The next prime is 621670100081. The reversal of 621670100066 is 660001076126.

621670100066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 621670099999 and 621670100035.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223759786 + ... + 1223760293.

It is an arithmetic number, because the mean of its divisors is an integer number (117480963840).

Almost surely, 2^621670100066 is an apocalyptic number.

621670100066 is a deficient number, since it is larger than the sum of its proper divisors (318177610654).

621670100066 is a wasteful number, since it uses less digits than its factorization.

621670100066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447520208.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 621670100066 in words is "six hundred twenty-one billion, six hundred seventy million, one hundred thousand, sixty-six".