868897 has 4 divisors (see below), whose sum is σ = 871956. Its totient is φ = 865840.

The previous prime is 868891. The next prime is 868909. The reversal of 868897 is 798868.

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 136161 + 732736 = 369^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 868897 - 2¹¹ = 866849 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (868891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (217989).

2⁸⁶⁸⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

868897 is a deficient number, since it is larger than the sum of its proper divisors (3059).

868897 is a wasteful number, since it uses less digits than its factorization.

868897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058.

The product of its digits is 193536, while the sum is 46.

The square root of 868897 is about 932.1464477216. The cubic root of 868897 is about 95.4236664222.

The spelling of 868897 in words is "eight hundred sixty-eight thousand, eight hundred ninety-seven".