868817 has 2 divisors, whose sum is σ = 868818. Its totient is φ = 868816.

The previous prime is 868801. The next prime is 868841. The reversal of 868817 is 718868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 863041 + 5776 = 929^2 + 76^2 .

It is a cyclic number.

It is not a de Polignac number, because 868817 - 2⁴ = 868801 is a prime.

It is not a weakly prime, because it can be changed into another prime (868867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434408 + 434409.

It is an arithmetic number, because the mean of its divisors is an integer number (434409).

2⁸⁶⁸⁸¹⁷ is an apocalyptic number.

It is an amenable number.

868817 is a deficient number, since it is larger than the sum of its proper divisors (1).

868817 is an equidigital number, since it uses as much as digits as its factorization.

868817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 38.

The square root of 868817 is about 932.1035350217. The cubic root of 868817 is about 95.4207377561.

It can be divided in two parts, 8688 and 17, that multiplied together give a triangular number (147696 = T₅₄₃).

The spelling of 868817 in words is "eight hundred sixty-eight thousand, eight hundred seventeen".