860428817 has 2 divisors, whose sum is σ = 860428818. Its totient is φ = 860428816.

The previous prime is 860428763. The next prime is 860428831. The reversal of 860428817 is 718824068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764467201 + 95961616 = 27649^2 + 9796^2 .

It is a cyclic number.

It is not a de Polignac number, because 860428817 - 2⁸ = 860428561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (860428847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430214408 + 430214409.

It is an arithmetic number, because the mean of its divisors is an integer number (430214409).

Almost surely, 2^860428817 is an apocalyptic number.

It is an amenable number.

860428817 is a deficient number, since it is larger than the sum of its proper divisors (1).

860428817 is an equidigital number, since it uses as much as digits as its factorization.

860428817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 860428817 is about 29333.0669552299. The cubic root of 860428817 is about 951.1265737545.

The spelling of 860428817 in words is "eight hundred sixty million, four hundred twenty-eight thousand, eight hundred seventeen".