628604820638 has 8 divisors (see below), whose sum is σ = 942915280080. Its totient is φ = 314299727280.

The previous prime is 628604820607. The next prime is 628604820643. The reversal of 628604820638 is 836028406826.

628604820638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 628604820638.

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, 1034618 + ... + 1525661.

It is an arithmetic number, because the mean of its divisors is an integer number (117864410010).

Almost surely, 2^628604820638 is an apocalyptic number.

628604820638 is a deficient number, since it is larger than the sum of its proper divisors (314310459442).

628604820638 is a wasteful number, since it uses less digits than its factorization.

628604820638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683042.

The product of its (nonzero) digits is 5308416, while the sum is 53.

The spelling of 628604820638 in words is "six hundred twenty-eight billion, six hundred four million, eight hundred twenty thousand, six hundred thirty-eight".