628686799636 has 24 divisors (see below), whose sum is σ = 1268909143040. Its totient is φ = 266965297632.

The previous prime is 628686799619. The next prime is 628686799649. The reversal of 628686799636 is 636997686826.

It is a congruent number.

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, 102992820 + ... + 102998923.

Almost surely, 2^628686799636 is an apocalyptic number.

It is an amenable number.

628686799636 is an abundant number, since it is smaller than the sum of its proper divisors (640222343404).

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

628686799636 is a wasteful number, since it uses less digits than its factorization.

628686799636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205991863 (or 205991861 counting only the distinct ones).

The product of its digits is 1693052928, while the sum is 76.

The spelling of 628686799636 in words is "six hundred twenty-eight billion, six hundred eighty-six million, seven hundred ninety-nine thousand, six hundred thirty-six".