870637 has 4 divisors (see below), whose sum is σ = 916480. Its totient is φ = 824796.

The previous prime is 870629. The next prime is 870641. The reversal of 870637 is 736078.

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 870637 - 2³ = 870629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 870599 and 870608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870137) 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 3 ways as a sum of consecutive naturals, for example, 22893 + ... + 22930.

It is an arithmetic number, because the mean of its divisors is an integer number (229120).

2⁸⁷⁰⁶³⁷ is an apocalyptic number.

It is an amenable number.

870637 is a deficient number, since it is larger than the sum of its proper divisors (45843).

870637 is a wasteful number, since it uses less digits than its factorization.

870637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45842.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 870637 is about 933.0793106698. The cubic root of 870637 is about 95.4873204843.

The spelling of 870637 in words is "eight hundred seventy thousand, six hundred thirty-seven".