628750671844 has 27 divisors (see below), whose sum is σ = 1106141833251. Its totient is φ = 312718888440.

The previous prime is 628750671827. The next prime is 628750671889. The reversal of 628750671844 is 448176057826.

The square root of 628750671844 is 792938.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 334618897 + ... + 334620775.

Almost surely, 2^628750671844 is an apocalyptic number.

628750671844 is the 792938-th square number.

It is an amenable number.

628750671844 is a deficient number, since it is larger than the sum of its proper divisors (477391161407).

628750671844 is an frugal number, since it uses more digits than its factorization.

628750671844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184 (or 2092 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 628750671844 in words is "six hundred twenty-eight billion, seven hundred fifty million, six hundred seventy-one thousand, eight hundred forty-four".