810868 has 6 divisors (see below), whose sum is σ = 1419026. Its totient is φ = 405432.

The previous prime is 810853. The next prime is 810871. The reversal of 810868 is 868018.

It can be written as a sum of positive squares in only one way, i.e., 465124 + 345744 = 682^2 + 588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101355 + ... + 101362.

2⁸¹⁰⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

810868 is a deficient number, since it is larger than the sum of its proper divisors (608158).

810868 is a wasteful number, since it uses less digits than its factorization.

810868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202721 (or 202719 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 810868 is about 900.4820931035. The cubic root of 810868 is about 93.2502605488.

The spelling of 810868 in words is "eight hundred ten thousand, eight hundred sixty-eight".