628801608 has 32 divisors (see below), whose sum is σ = 1585922400. Its totient is φ = 207744768.

The previous prime is 628801597. The next prime is 628801639. The reversal of 628801608 is 806108826.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113218 + ... + 118641.

It is an arithmetic number, because the mean of its divisors is an integer number (49560075).

Almost surely, 2^628801608 is an apocalyptic number.

It is an amenable number.

628801608 is an abundant number, since it is smaller than the sum of its proper divisors (957120792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628801608 is a wasteful number, since it uses less digits than its factorization.

628801608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231981 (or 231977 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 628801608 is about 25075.9168925086. The cubic root of 628801608 is about 856.7179792998.

The spelling of 628801608 in words is "six hundred twenty-eight million, eight hundred one thousand, six hundred eight".