872505 has 32 divisors (see below), whose sum is σ = 1624320. Its totient is φ = 443520.

The previous prime is 872479. The next prime is 872533. The reversal of 872505 is 505278.

It is a happy number.

It is not a de Polignac number, because 872505 - 2⁶ = 872441 is a prime.

It is a super-2 number, since 2×872505² = 1522529950050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2965 + ... + 3245.

It is an arithmetic number, because the mean of its divisors is an integer number (50760).

2⁸⁷²⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

872505 is a deficient number, since it is larger than the sum of its proper divisors (751815).

872505 is a wasteful number, since it uses less digits than its factorization.

872505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 872505 is about 934.0797610483. The cubic root of 872505 is about 95.5555628167. Note that the first 4 decimals are identical.

The spelling of 872505 in words is "eight hundred seventy-two thousand, five hundred five".