870261 has 16 divisors (see below), whose sum is σ = 1372800. Its totient is φ = 479808.

The previous prime is 870253. The next prime is 870271. The reversal of 870261 is 162078.

It is not a de Polignac number, because 870261 - 2³ = 870253 is a prime.

870261 is a modest number, since divided by 261 gives 87 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106 + ... + 1323.

It is an arithmetic number, because the mean of its divisors is an integer number (85800).

2⁸⁷⁰²⁶¹ is an apocalyptic number.

It is an amenable number.

870261 is a deficient number, since it is larger than the sum of its proper divisors (502539).

870261 is a wasteful number, since it uses less digits than its factorization.

870261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 870261 is about 932.8778055030. The cubic root of 870261 is about 95.4735725418.

The spelling of 870261 in words is "eight hundred seventy thousand, two hundred sixty-one".