865968 has 20 divisors (see below), whose sum is σ = 2237208. Its totient is φ = 288640.

The previous prime is 865957. The next prime is 865979. The reversal of 865968 is 869568.

865968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (865957) and next prime (865979).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8973 + ... + 9068.

2⁸⁶⁵⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

865968 is an abundant number, since it is smaller than the sum of its proper divisors (1371240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

865968 is a wasteful number, since it uses less digits than its factorization.

865968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18052 (or 18046 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 865968 is about 930.5740164006. The cubic root of 865968 is about 95.3163232185.

Subtracting 865968 from its reverse (869568), we obtain a square (3600 = 60²).

The spelling of 865968 in words is "eight hundred sixty-five thousand, nine hundred sixty-eight".