628217608 has 16 divisors (see below), whose sum is σ = 1180470060. Its totient is φ = 313425600.

The previous prime is 628217599. The next prime is 628217647. The reversal of 628217608 is 806712826.

It can be written as a sum of positive squares in 2 ways, for example, as 581677924 + 46539684 = 24118^2 + 6822^2 .

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, 81483 + ... + 88858.

Almost surely, 2^628217608 is an apocalyptic number.

It is an amenable number.

628217608 is a deficient number, since it is larger than the sum of its proper divisors (552252452).

628217608 is a wasteful number, since it uses less digits than its factorization.

628217608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170808 (or 170804 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 628217608 is about 25064.2695485027. The cubic root of 628217608 is about 856.4526713100.

The spelling of 628217608 in words is "six hundred twenty-eight million, two hundred seventeen thousand, six hundred eight".