628604820639 has 24 divisors (see below), whose sum is σ = 915228068352. Its totient is φ = 415727484480.

The previous prime is 628604820607. The next prime is 628604820643. The reversal of 628604820639 is 936028406826.

628604820639 is a `hidden beast` number, since 6 + 2 + 8 + 604 + 8 + 20 + 6 + 3 + 9 = 666.

It is not a de Polignac number, because 628604820639 - 2⁵ = 628604820607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628604820689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14312437 + ... + 14356289.

It is an arithmetic number, because the mean of its divisors is an integer number (38134502848).

Almost surely, 2^628604820639 is an apocalyptic number.

628604820639 is a deficient number, since it is larger than the sum of its proper divisors (286623247713).

628604820639 is a wasteful number, since it uses less digits than its factorization.

628604820639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56527 (or 56524 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 628604820639 in words is "six hundred twenty-eight billion, six hundred four million, eight hundred twenty thousand, six hundred thirty-nine".