634177172 has 12 divisors (see below), whose sum is σ = 1116226356. Its totient is φ = 315255360.

The previous prime is 634177147. The next prime is 634177189. The reversal of 634177172 is 271771436.

It can be written as a sum of positive squares in 2 ways, for example, as 494795536 + 139381636 = 22244^2 + 11806^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 457529 + ... + 458912.

It is an arithmetic number, because the mean of its divisors is an integer number (93018863).

Almost surely, 2^634177172 is an apocalyptic number.

It is an amenable number.

634177172 is a deficient number, since it is larger than the sum of its proper divisors (482049184).

634177172 is a wasteful number, since it uses less digits than its factorization.

634177172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916618 (or 916616 counting only the distinct ones).

The product of its digits is 49392, while the sum is 38.

The square root of 634177172 is about 25182.8745777761. The cubic root of 634177172 is about 859.1523882365.

The spelling of 634177172 in words is "six hundred thirty-four million, one hundred seventy-seven thousand, one hundred seventy-two".