872087 has 4 divisors (see below), whose sum is σ = 874200. Its totient is φ = 869976.

The previous prime is 872077. The next prime is 872089. The reversal of 872087 is 780278.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 872087 - 2⁴ = 872071 is a prime.

It is a Duffinian number.

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 872087.

It is not an unprimeable number, because it can be changed into a prime (872089) 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, 212 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (218550).

2⁸⁷²⁰⁸⁷ is an apocalyptic number.

872087 is a deficient number, since it is larger than the sum of its proper divisors (2113).

872087 is a wasteful number, since it uses less digits than its factorization.

872087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 872087 is about 933.8559846143. The cubic root of 872087 is about 95.5403007818.

Subtracting from 872087 its reverse (780278), we obtain a square (91809 = 303²).

The spelling of 872087 in words is "eight hundred seventy-two thousand, eighty-seven".