634172265 has 12 divisors (see below), whose sum is σ = 1099232004. Its totient is φ = 338225184.

The previous prime is 634172257. The next prime is 634172281. The reversal of 634172265 is 562271436.

634172265 is a `hidden beast` number, since 634 + 17 + 2 + 2 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 389312361 + 244859904 = 19731^2 + 15648^2 .

It is not a de Polignac number, because 634172265 - 2³ = 634172257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7046314 + ... + 7046403.

It is an arithmetic number, because the mean of its divisors is an integer number (91602667).

Almost surely, 2^634172265 is an apocalyptic number.

It is an amenable number.

634172265 is a deficient number, since it is larger than the sum of its proper divisors (465059739).

634172265 is a wasteful number, since it uses less digits than its factorization.

634172265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14092728 (or 14092725 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 634172265 is about 25182.7771502668. Note that the first 3 decimals coincide. The cubic root of 634172265 is about 859.1501723091.

It can be divided in two parts, 6341 and 72265, that added together give a triangular number (78606 = T₃₉₆).

The spelling of 634172265 in words is "six hundred thirty-four million, one hundred seventy-two thousand, two hundred sixty-five".