997272170 has 16 divisors (see below), whose sum is σ = 1852996608. Its totient is φ = 386040720.

The previous prime is 997272169. The next prime is 997272191. The reversal of 997272170 is 71272799.

It is a Curzon 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, 1608194 + ... + 1608813.

It is an arithmetic number, because the mean of its divisors is an integer number (115812288).

Almost surely, 2^997272170 is an apocalyptic number.

997272170 is a deficient number, since it is larger than the sum of its proper divisors (855724438).

997272170 is a wasteful number, since it uses less digits than its factorization.

997272170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217045.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 997272170 is about 31579.6163687908. The cubic root of 997272170 is about 999.0898952940.

The spelling of 997272170 in words is "nine hundred ninety-seven million, two hundred seventy-two thousand, one hundred seventy".