997135 has 8 divisors (see below), whose sum is σ = 1267056. Its totient is φ = 750720.

The previous prime is 997123. The next prime is 997141. The reversal of 997135 is 531799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 997135 - 2⁵ = 997103 is a prime.

It is a Duffinian number.

997135 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 997135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5781 + ... + 5950.

It is an arithmetic number, because the mean of its divisors is an integer number (158382).

2⁹⁹⁷¹³⁵ is an apocalyptic number.

997135 is a deficient number, since it is larger than the sum of its proper divisors (269921).

997135 is a wasteful number, since it uses less digits than its factorization.

997135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11753.

The product of its digits is 8505, while the sum is 34.

The square root of 997135 is about 998.5664724995. The cubic root of 997135 is about 99.9044086521.

The spelling of 997135 in words is "nine hundred ninety-seven thousand, one hundred thirty-five".