641614556 has 24 divisors (see below), whose sum is σ = 1226156400. Its totient is φ = 291344000.

The previous prime is 641614543. The next prime is 641614559. The reversal of 641614556 is 655416146.

It is a happy number.

641614556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641614559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39206 + ... + 53106.

It is an arithmetic number, because the mean of its divisors is an integer number (51089850).

Almost surely, 2^641614556 is an apocalyptic number.

It is an amenable number.

641614556 is a deficient number, since it is larger than the sum of its proper divisors (584541844).

641614556 is a wasteful number, since it uses less digits than its factorization.

641614556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14965 (or 14963 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 641614556 is about 25330.1116460232. Note that the first 3 decimals coincide. The cubic root of 641614556 is about 862.4979456928.

The spelling of 641614556 in words is "six hundred forty-one million, six hundred fourteen thousand, five hundred fifty-six".