172267689 has 8 divisors (see below), whose sum is σ = 250571232. Its totient is φ = 104404640.

The previous prime is 172267679. The next prime is 172267703. The reversal of 172267689 is 986762271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172267689 - 2⁴ = 172267673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172267619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2610084 + ... + 2610149.

It is an arithmetic number, because the mean of its divisors is an integer number (31321404).

Almost surely, 2^172267689 is an apocalyptic number.

It is an amenable number.

172267689 is a deficient number, since it is larger than the sum of its proper divisors (78303543).

172267689 is a wasteful number, since it uses less digits than its factorization.

172267689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220247.

The product of its digits is 508032, while the sum is 48.

The square root of 172267689 is about 13125.0786283359. The cubic root of 172267689 is about 556.4181345208.

The spelling of 172267689 in words is "one hundred seventy-two million, two hundred sixty-seven thousand, six hundred eighty-nine".