868537 has 2 divisors, whose sum is σ = 868538. Its totient is φ = 868536.

The previous prime is 868531. The next prime is 868559. The reversal of 868537 is 735868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622521 + 246016 = 789^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 868537 - 2³ = 868529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 868496 and 868505.

It is not a weakly prime, because it can be changed into another prime (868531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434268 + 434269.

It is an arithmetic number, because the mean of its divisors is an integer number (434269).

2⁸⁶⁸⁵³⁷ is an apocalyptic number.

It is an amenable number.

868537 is a deficient number, since it is larger than the sum of its proper divisors (1).

868537 is an equidigital number, since it uses as much as digits as its factorization.

868537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 37.

The square root of 868537 is about 931.9533250115. The cubic root of 868537 is about 95.4104860087.

The spelling of 868537 in words is "eight hundred sixty-eight thousand, five hundred thirty-seven".