870211 has 2 divisors, whose sum is σ = 870212. Its totient is φ = 870210.

The previous prime is 870197. The next prime is 870223. The reversal of 870211 is 112078.

870211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 870211 - 2⁷ = 870083 is a prime.

It is not a weakly prime, because it can be changed into another prime (870241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435105 + 435106.

It is an arithmetic number, because the mean of its divisors is an integer number (435106).

2⁸⁷⁰²¹¹ is an apocalyptic number.

870211 is a deficient number, since it is larger than the sum of its proper divisors (1).

870211 is an equidigital number, since it uses as much as digits as its factorization.

870211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 870211 is about 932.8510063242. The cubic root of 870211 is about 95.4717440597.

Adding to 870211 its reverse (112078), we get a palindrome (982289).

It can be divided in two parts, 870 and 211, that added together give a triangular number (1081 = T₄₆).

The spelling of 870211 in words is "eight hundred seventy thousand, two hundred eleven".