172974705 has 16 divisors (see below), whose sum is σ = 286303680. Its totient is φ = 89071808.

The previous prime is 172974701. The next prime is 172974707. The reversal of 172974705 is 507479271.

172974705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 172974705 - 2² = 172974701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172974701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198387 + ... + 199256.

It is an arithmetic number, because the mean of its divisors is an integer number (17893980).

Almost surely, 2^172974705 is an apocalyptic number.

172974705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172974705 is a deficient number, since it is larger than the sum of its proper divisors (113328975).

172974705 is a wasteful number, since it uses less digits than its factorization.

172974705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397680.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 172974705 is about 13151.9848311956. The cubic root of 172974705 is about 557.1783071742.

The spelling of 172974705 in words is "one hundred seventy-two million, nine hundred seventy-four thousand, seven hundred five".