628406616 has 16 divisors (see below), whose sum is σ = 1571016600. Its totient is φ = 209468864.

The previous prime is 628406609. The next prime is 628406651. The reversal of 628406616 is 616604826.

628406616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 13091781 + ... + 13091828.

Almost surely, 2^628406616 is an apocalyptic number.

It is an amenable number.

628406616 is an abundant number, since it is smaller than the sum of its proper divisors (942609984).

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

628406616 is a wasteful number, since it uses less digits than its factorization.

628406616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26183618 (or 26183614 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 628406616 is about 25068.0397318977. The cubic root of 628406616 is about 856.5385545946.

The spelling of 628406616 in words is "six hundred twenty-eight million, four hundred six thousand, six hundred sixteen".