677215437172 has 12 divisors (see below), whose sum is σ = 1185149567140. Its totient is φ = 338601275136.

The previous prime is 677215437169. The next prime is 677215437187. The reversal of 677215437172 is 271734512776.

It can be written as a sum of positive squares in 2 ways, for example, as 184922360676 + 492293076496 = 430026^2 + 701636^2 .

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, 1370397 + ... + 1797892.

Almost surely, 2^677215437172 is an apocalyptic number.

It is an amenable number.

677215437172 is a deficient number, since it is larger than the sum of its proper divisors (507934129968).

677215437172 is a wasteful number, since it uses less digits than its factorization.

677215437172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221730 (or 3221728 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 52.

The spelling of 677215437172 in words is "six hundred seventy-seven billion, two hundred fifteen million, four hundred thirty-seven thousand, one hundred seventy-two".