870161 has 2 divisors, whose sum is σ = 870162. Its totient is φ = 870160.

The previous prime is 870151. The next prime is 870169. The reversal of 870161 is 161078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 844561 + 25600 = 919^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 870161 - 2⁶ = 870097 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (870169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435080 + 435081.

It is an arithmetic number, because the mean of its divisors is an integer number (435081).

2⁸⁷⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

870161 is a deficient number, since it is larger than the sum of its proper divisors (1).

870161 is an equidigital number, since it uses as much as digits as its factorization.

870161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 870161 is about 932.8242063755. The cubic root of 870161 is about 95.4699155075.

The spelling of 870161 in words is "eight hundred seventy thousand, one hundred sixty-one".