628416681564 has 72 divisors (see below), whose sum is σ = 1734612727680. Its totient is φ = 176504433504.

The previous prime is 628416681527. The next prime is 628416681679. The reversal of 628416681564 is 465186614826.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9022392 + ... + 9091775.

It is an arithmetic number, because the mean of its divisors is an integer number (24091843440).

Almost surely, 2^628416681564 is an apocalyptic number.

It is an amenable number.

628416681564 is an abundant number, since it is smaller than the sum of its proper divisors (1106196046116).

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

628416681564 is a wasteful number, since it uses less digits than its factorization.

628416681564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18114247 (or 18114238 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 57.

The spelling of 628416681564 in words is "six hundred twenty-eight billion, four hundred sixteen million, six hundred eighty-one thousand, five hundred sixty-four".