866352859 has 2 divisors, whose sum is σ = 866352860. Its totient is φ = 866352858.

The previous prime is 866352829. The next prime is 866352871. The reversal of 866352859 is 958253668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866352859 - 2¹¹ = 866350811 is a prime.

It is not a weakly prime, because it can be changed into another prime (866352829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433176429 + 433176430.

It is an arithmetic number, because the mean of its divisors is an integer number (433176430).

Almost surely, 2^866352859 is an apocalyptic number.

866352859 is a deficient number, since it is larger than the sum of its proper divisors (1).

866352859 is an equidigital number, since it uses as much as digits as its factorization.

866352859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 52.

The square root of 866352859 is about 29433.8726470031. The cubic root of 866352859 is about 953.3044148916.

The spelling of 866352859 in words is "eight hundred sixty-six million, three hundred fifty-two thousand, eight hundred fifty-nine".