868157 has 2 divisors, whose sum is σ = 868158. Its totient is φ = 868156.

The previous prime is 868151. The next prime is 868171. The reversal of 868157 is 751868.

It is a happy number.

868157 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 32761 = 914^2 + 181^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434078 + 434079.

It is an arithmetic number, because the mean of its divisors is an integer number (434079).

2⁸⁶⁸¹⁵⁷ is an apocalyptic number.

It is an amenable number.

868157 is a deficient number, since it is larger than the sum of its proper divisors (1).

868157 is an equidigital number, since it uses as much as digits as its factorization.

868157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 868157 is about 931.7494298362. The cubic root of 868157 is about 95.3965693982.

The spelling of 868157 in words is "eight hundred sixty-eight thousand, one hundred fifty-seven".