997179 has 4 divisors (see below), whose sum is σ = 1329576. Its totient is φ = 664784.

The previous prime is 997163. The next prime is 997201. The reversal of 997179 is 971799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 971799 = 3 ⋅323933.

It is a cyclic number.

It is not a de Polignac number, because 997179 - 2⁴ = 997163 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 997179.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 997179.

It is not an unprimeable number, because it can be changed into a prime (997109) 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, 166194 + ... + 166199.

It is an arithmetic number, because the mean of its divisors is an integer number (332394).

2⁹⁹⁷¹⁷⁹ is an apocalyptic number.

997179 is a deficient number, since it is larger than the sum of its proper divisors (332397).

997179 is a wasteful number, since it uses less digits than its factorization.

997179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332396.

The product of its digits is 35721, while the sum is 42.

The square root of 997179 is about 998.5885038393. The cubic root of 997179 is about 99.9058781051.

It can be divided in two parts, 997 and 179, that added together give a triangular number (1176 = T₄₈).

The spelling of 997179 in words is "nine hundred ninety-seven thousand, one hundred seventy-nine".