868757 has 4 divisors (see below), whose sum is σ = 871116. Its totient is φ = 866400.

The previous prime is 868741. The next prime is 868771. The reversal of 868757 is 757868.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 398161 + 470596 = 631^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 868757 - 2⁴ = 868741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 868757.

It is not an unprimeable number, because it can be changed into a prime (868727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494 + ... + 1407.

It is an arithmetic number, because the mean of its divisors is an integer number (217779).

2⁸⁶⁸⁷⁵⁷ is an apocalyptic number.

It is an amenable number.

868757 is a deficient number, since it is larger than the sum of its proper divisors (2359).

868757 is a wasteful number, since it uses less digits than its factorization.

868757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358.

The product of its digits is 94080, while the sum is 41.

The square root of 868757 is about 932.0713492003. The cubic root of 868757 is about 95.4185411385.

Subtracting from 868757 its reverse (757868), we obtain a square (110889 = 333²).

The spelling of 868757 in words is "eight hundred sixty-eight thousand, seven hundred fifty-seven".