172616605 has 8 divisors (see below), whose sum is σ = 236731392. Its totient is φ = 118365648.

The previous prime is 172616597. The next prime is 172616747. The reversal of 172616605 is 506616271.

It is a happy number.

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 172616605 - 2³ = 172616597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2465917 + ... + 2465986.

It is an arithmetic number, because the mean of its divisors is an integer number (29591424).

Almost surely, 2^172616605 is an apocalyptic number.

It is an amenable number.

172616605 is a deficient number, since it is larger than the sum of its proper divisors (64114787).

172616605 is an equidigital number, since it uses as much as digits as its factorization.

172616605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931915.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 172616605 is about 13138.3638631300. The cubic root of 172616605 is about 556.7935430179.

The spelling of 172616605 in words is "one hundred seventy-two million, six hundred sixteen thousand, six hundred five".