868369 has 2 divisors, whose sum is σ = 868370. Its totient is φ = 868368.

The previous prime is 868349. The next prime is 868379. The reversal of 868369 is 963868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 508369 + 360000 = 713^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 868369 - 2⁵ = 868337 is a prime.

It is a super-2 number, since 2×868369² = 1508129440322, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (868349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434184 + 434185.

It is an arithmetic number, because the mean of its divisors is an integer number (434185).

2⁸⁶⁸³⁶⁹ is an apocalyptic number.

It is an amenable number.

868369 is a deficient number, since it is larger than the sum of its proper divisors (1).

868369 is an equidigital number, since it uses as much as digits as its factorization.

868369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 868369 is about 931.8631873832. The cubic root of 868369 is about 95.4043339026.

The spelling of 868369 in words is "eight hundred sixty-eight thousand, three hundred sixty-nine".