628355564 has 12 divisors (see below), whose sum is σ = 1164306024. Its totient is φ = 295696704.

The previous prime is 628355543. The next prime is 628355579. The reversal of 628355564 is 465553826.

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, 4620194 + ... + 4620329.

It is an arithmetic number, because the mean of its divisors is an integer number (97025502).

Almost surely, 2^628355564 is an apocalyptic number.

It is an amenable number.

628355564 is a deficient number, since it is larger than the sum of its proper divisors (535950460).

628355564 is a wasteful number, since it uses less digits than its factorization.

628355564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9240544 (or 9240542 counting only the distinct ones).

The product of its digits is 864000, while the sum is 44.

The square root of 628355564 is about 25067.0214425248. The cubic root of 628355564 is about 856.5153587904.

The spelling of 628355564 in words is "six hundred twenty-eight million, three hundred fifty-five thousand, five hundred sixty-four".