870487 has 4 divisors (see below), whose sum is σ = 889056. Its totient is φ = 851920.

The previous prime is 870479. The next prime is 870491. The reversal of 870487 is 784078.

870487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 870487 - 2³ = 870479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870407) 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, 9214 + ... + 9307.

It is an arithmetic number, because the mean of its divisors is an integer number (222264).

2⁸⁷⁰⁴⁸⁷ is an apocalyptic number.

870487 is a deficient number, since it is larger than the sum of its proper divisors (18569).

870487 is a wasteful number, since it uses less digits than its factorization.

870487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18568.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 870487 is about 932.9989281880. The cubic root of 870487 is about 95.4818364074.

The spelling of 870487 in words is "eight hundred seventy thousand, four hundred eighty-seven".