628545968 has 20 divisors (see below), whose sum is σ = 1218203280. Its totient is φ = 314170944.

The previous prime is 628545959. The next prime is 628546019. The reversal of 628545968 is 869545826.

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, 79373 + ... + 86931.

It is an arithmetic number, because the mean of its divisors is an integer number (60910164).

Almost surely, 2^628545968 is an apocalyptic number.

It is an amenable number.

628545968 is a deficient number, since it is larger than the sum of its proper divisors (589657312).

628545968 is a wasteful number, since it uses less digits than its factorization.

628545968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12764 (or 12758 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 53.

The square root of 628545968 is about 25070.8190532340. The cubic root of 628545968 is about 856.6018636771.

The spelling of 628545968 in words is "six hundred twenty-eight million, five hundred forty-five thousand, nine hundred sixty-eight".