870347 has 4 divisors (see below), whose sum is σ = 872400. Its totient is φ = 868296.

The previous prime is 870341. The next prime is 870367. The reversal of 870347 is 743078.

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 870347 - 2⁶ = 870283 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870341) 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, 128 + ... + 1325.

It is an arithmetic number, because the mean of its divisors is an integer number (218100).

2⁸⁷⁰³⁴⁷ is an apocalyptic number.

870347 is a deficient number, since it is larger than the sum of its proper divisors (2053).

870347 is a wasteful number, since it uses less digits than its factorization.

870347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 870347 is about 932.9238982897. The cubic root of 870347 is about 95.4767173673.

The spelling of 870347 in words is "eight hundred seventy thousand, three hundred forty-seven".