997185 has 16 divisors (see below), whose sum is σ = 1823616. Its totient is φ = 455808.

The previous prime is 997163. The next prime is 997201. The reversal of 997185 is 581799.

It is a happy number.

It is not a de Polignac number, because 997185 - 2⁵ = 997153 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 997185.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4644 + ... + 4853.

It is an arithmetic number, because the mean of its divisors is an integer number (113976).

2⁹⁹⁷¹⁸⁵ is an apocalyptic number.

It is an amenable number.

997185 is a deficient number, since it is larger than the sum of its proper divisors (826431).

997185 is a wasteful number, since it uses less digits than its factorization.

997185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9512.

The product of its digits is 22680, while the sum is 39.

The square root of 997185 is about 998.5915080752. The cubic root of 997185 is about 99.9060784818.

The spelling of 997185 in words is "nine hundred ninety-seven thousand, one hundred eighty-five".