870271 has 2 divisors, whose sum is σ = 870272. Its totient is φ = 870270.

The previous prime is 870253. The next prime is 870283. The reversal of 870271 is 172078.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 870271 - 2⁵ = 870239 is a prime.

It is a super-2 number, since 2×870271² = 1514743226882, which contains 22 as substring.

870271 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435135 + 435136.

It is an arithmetic number, because the mean of its divisors is an integer number (435136).

2⁸⁷⁰²⁷¹ is an apocalyptic number.

870271 is a deficient number, since it is larger than the sum of its proper divisors (1).

870271 is an equidigital number, since it uses as much as digits as its factorization.

870271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 870271 is about 932.8831652463. The cubic root of 870271 is about 95.4739382298.

The spelling of 870271 in words is "eight hundred seventy thousand, two hundred seventy-one".