621161056 has 12 divisors (see below), whose sum is σ = 1222910892. Its totient is φ = 310580512.

The previous prime is 621160957. The next prime is 621161083. The reversal of 621161056 is 650161126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9705610 + ... + 9705673.

It is an arithmetic number, because the mean of its divisors is an integer number (101909241).

Almost surely, 2^621161056 is an apocalyptic number.

It is an amenable number.

621161056 is a deficient number, since it is larger than the sum of its proper divisors (601749836).

621161056 is a wasteful number, since it uses less digits than its factorization.

621161056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19411293 (or 19411285 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 621161056 is about 24923.1028565867. The cubic root of 621161056 is about 853.2338431101.

The spelling of 621161056 in words is "six hundred twenty-one million, one hundred sixty-one thousand, fifty-six".