861059 has 2 divisors, whose sum is σ = 861060. Its totient is φ = 861058.

The previous prime is 861053. The next prime is 861079. The reversal of 861059 is 950168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861059 - 2⁴ = 861043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (861053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430529 + 430530.

It is an arithmetic number, because the mean of its divisors is an integer number (430530).

2⁸⁶¹⁰⁵⁹ is an apocalyptic number.

861059 is a deficient number, since it is larger than the sum of its proper divisors (1).

861059 is an equidigital number, since it uses as much as digits as its factorization.

861059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 861059 is about 927.9326484180. The cubic root of 861059 is about 95.1358720608.

The spelling of 861059 in words is "eight hundred sixty-one thousand, fifty-nine".