172064287 has 8 divisors (see below), whose sum is σ = 173424240. Its totient is φ = 170709120.

The previous prime is 172064261. The next prime is 172064297. The reversal of 172064287 is 782460271.

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 172064287 - 2¹¹ = 172062239 is a prime.

It is a super-2 number, since 2×172064287² = 59212237721636738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172064297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105337 + ... + 106957.

It is an arithmetic number, because the mean of its divisors is an integer number (21678030).

Almost surely, 2^172064287 is an apocalyptic number.

172064287 is a deficient number, since it is larger than the sum of its proper divisors (1359953).

172064287 is a wasteful number, since it uses less digits than its factorization.

172064287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 172064287 is about 13117.3277385297. The cubic root of 172064287 is about 556.1990546786.

The spelling of 172064287 in words is "one hundred seventy-two million, sixty-four thousand, two hundred eighty-seven".