870687 has 12 divisors (see below), whose sum is σ = 1272960. Its totient is φ = 573408.

The previous prime is 870679. The next prime is 870691. The reversal of 870687 is 786078.

870687 = T₉₃ + T₉₄ + ... + T₁₈₁.

It is a happy number.

It is not a de Polignac number, because 870687 - 2³ = 870679 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 870687.

It is not an unprimeable number, because it can be changed into a prime (870787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 258 + ... + 1344.

It is an arithmetic number, because the mean of its divisors is an integer number (106080).

2⁸⁷⁰⁶⁸⁷ is an apocalyptic number.

870687 is a deficient number, since it is larger than the sum of its proper divisors (402273).

870687 is a wasteful number, since it uses less digits than its factorization.

870687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1179 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 870687 is about 933.1061032916. The cubic root of 870687 is about 95.4891483700.

The spelling of 870687 in words is "eight hundred seventy thousand, six hundred eighty-seven".