172894705 has 4 divisors (see below), whose sum is σ = 207473652. Its totient is φ = 138315760.

The previous prime is 172894697. The next prime is 172894741. The reversal of 172894705 is 507498271.

172894705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122257249 + 50637456 = 11057^2 + 7116^2 .

It is not a de Polignac number, because 172894705 - 2³ = 172894697 is a prime.

It is a Duffinian 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, 17289466 + ... + 17289475.

It is an arithmetic number, because the mean of its divisors is an integer number (51868413).

Almost surely, 2^172894705 is an apocalyptic number.

It is an amenable number.

172894705 is a deficient number, since it is larger than the sum of its proper divisors (34578947).

172894705 is an equidigital number, since it uses as much as digits as its factorization.

172894705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34578946.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 172894705 is about 13148.9431134217. The cubic root of 172894705 is about 557.0923964662.

The spelling of 172894705 in words is "one hundred seventy-two million, eight hundred ninety-four thousand, seven hundred five".