172704465 has 12 divisors (see below), whose sum is σ = 299354484. Its totient is φ = 92109024.

The previous prime is 172704451. The next prime is 172704517. The reversal of 172704465 is 564407271.

It can be written as a sum of positive squares in 2 ways, for example, as 137170944 + 35533521 = 11712^2 + 5961^2 .

It is not a de Polignac number, because 172704465 - 2⁴ = 172704449 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, 1918894 + ... + 1918983.

It is an arithmetic number, because the mean of its divisors is an integer number (24946207).

Almost surely, 2^172704465 is an apocalyptic number.

172704465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172704465 is a deficient number, since it is larger than the sum of its proper divisors (126650019).

172704465 is a wasteful number, since it uses less digits than its factorization.

172704465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837888 (or 3837885 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 172704465 is about 13141.7070808933. The cubic root of 172704465 is about 556.8879943081.

The spelling of 172704465 in words is "one hundred seventy-two million, seven hundred four thousand, four hundred sixty-five".