870241 has 2 divisors, whose sum is σ = 870242. Its totient is φ = 870240.

The previous prime is 870239. The next prime is 870253. The reversal of 870241 is 142078.

870241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 254016 = 785^2 + 504^2 .

It is a cyclic number.

It is not a de Polignac number, because 870241 - 2¹ = 870239 is a prime.

Together with 870239, it forms a pair of twin primes.

It is an Ulam 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, 435120 + 435121.

It is an arithmetic number, because the mean of its divisors is an integer number (435121).

2⁸⁷⁰²⁴¹ is an apocalyptic number.

It is an amenable number.

870241 is a deficient number, since it is larger than the sum of its proper divisors (1).

870241 is an equidigital number, since it uses as much as digits as its factorization.

870241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 870241 is about 932.8670859238. The cubic root of 870241 is about 95.4728411574.

It can be divided in two parts, 87024 and 1, that added together give a square (87025 = 295²).

The spelling of 870241 in words is "eight hundred seventy thousand, two hundred forty-one".