872815 has 8 divisors (see below), whose sum is σ = 1053360. Its totient is φ = 694272.

The previous prime is 872791. The next prime is 872843. The reversal of 872815 is 518278.

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

It is a cyclic number.

It is not a de Polignac number, because 872815 - 2⁷ = 872687 is a prime.

872815 is a lucky number.

It is a congruent 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, 751 + ... + 1519.

It is an arithmetic number, because the mean of its divisors is an integer number (131670).

2⁸⁷²⁸¹⁵ is an apocalyptic number.

872815 is a deficient number, since it is larger than the sum of its proper divisors (180545).

872815 is a wasteful number, since it uses less digits than its factorization.

872815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001.

The product of its digits is 4480, while the sum is 31.

The square root of 872815 is about 934.2456850315. The cubic root of 872815 is about 95.5668784031.

The spelling of 872815 in words is "eight hundred seventy-two thousand, eight hundred fifteen".