872997 has 4 divisors (see below), whose sum is σ = 1164000. Its totient is φ = 581996.

The previous prime is 872959. The next prime is 872999. The reversal of 872997 is 799278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 872997 - 2¹⁰ = 871973 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872999) 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, 145497 + ... + 145502.

It is an arithmetic number, because the mean of its divisors is an integer number (291000).

2⁸⁷²⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

872997 is a deficient number, since it is larger than the sum of its proper divisors (291003).

872997 is a wasteful number, since it uses less digits than its factorization.

872997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291002.

The product of its digits is 63504, while the sum is 42.

The square root of 872997 is about 934.3430847392. The cubic root of 872997 is about 95.5735204991.

The spelling of 872997 in words is "eight hundred seventy-two thousand, nine hundred ninety-seven".