868199 has 2 divisors, whose sum is σ = 868200. Its totient is φ = 868198.

The previous prime is 868177. The next prime is 868211. The reversal of 868199 is 991868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 868199 - 2⁸ = 867943 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434099 + 434100.

It is an arithmetic number, because the mean of its divisors is an integer number (434100).

2⁸⁶⁸¹⁹⁹ is an apocalyptic number.

868199 is a deficient number, since it is larger than the sum of its proper divisors (1).

868199 is an equidigital number, since it uses as much as digits as its factorization.

868199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 41.

The square root of 868199 is about 931.7719678119. The cubic root of 868199 is about 95.3981077495.

The spelling of 868199 in words is "eight hundred sixty-eight thousand, one hundred ninety-nine".