172670207 has 4 divisors (see below), whose sum is σ = 182827296. Its totient is φ = 162513120.

The previous prime is 172670171. The next prime is 172670209. The reversal of 172670207 is 702076271.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 172670207 - 2⁶ = 172670143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172670209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5078519 + ... + 5078552.

It is an arithmetic number, because the mean of its divisors is an integer number (45706824).

Almost surely, 2^172670207 is an apocalyptic number.

172670207 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

172670207 is a deficient number, since it is larger than the sum of its proper divisors (10157089).

172670207 is a wasteful number, since it uses less digits than its factorization.

172670207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157088.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 172670207 is about 13140.4036087177. The cubic root of 172670207 is about 556.8511700710.

The spelling of 172670207 in words is "one hundred seventy-two million, six hundred seventy thousand, two hundred seven".