628655416 has 16 divisors (see below), whose sum is σ = 1191974400. Its totient is φ = 310795584.

The previous prime is 628655387. The next prime is 628655437. The reversal of 628655416 is 614556826.

It is a super-2 number, since 2×628655416² = 790415264132266112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440760 + ... + 442183.

It is an arithmetic number, because the mean of its divisors is an integer number (74498400).

Almost surely, 2^628655416 is an apocalyptic number.

It is an amenable number.

628655416 is a deficient number, since it is larger than the sum of its proper divisors (563318984).

628655416 is a wasteful number, since it uses less digits than its factorization.

628655416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883038 (or 883034 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 628655416 is about 25073.0017349339. The cubic root of 628655416 is about 856.6515804968.

The spelling of 628655416 in words is "six hundred twenty-eight million, six hundred fifty-five thousand, four hundred sixteen".