870235 has 4 divisors (see below), whose sum is σ = 1044288. Its totient is φ = 696184.

The previous prime is 870229. The next prime is 870239. The reversal of 870235 is 532078.

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 870235 - 2¹⁵ = 837467 is a prime.

It is a Duffinian number.

870235 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (870239) 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, 87019 + ... + 87028.

It is an arithmetic number, because the mean of its divisors is an integer number (261072).

2⁸⁷⁰²³⁵ is an apocalyptic number.

870235 is a deficient number, since it is larger than the sum of its proper divisors (174053).

870235 is a wasteful number, since it uses less digits than its factorization.

870235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174052.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 870235 is about 932.8638700261. The cubic root of 870235 is about 95.4726217399.

The spelling of 870235 in words is "eight hundred seventy thousand, two hundred thirty-five".