865707 has 16 divisors (see below), whose sum is σ = 1207680. Its totient is φ = 551232.

The previous prime is 865687. The next prime is 865717. The reversal of 865707 is 707568.

It is not a de Polignac number, because 865707 - 2⁶ = 865643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11823 + ... + 11895.

It is an arithmetic number, because the mean of its divisors is an integer number (75480).

2⁸⁶⁵⁷⁰⁷ is an apocalyptic number.

865707 is a deficient number, since it is larger than the sum of its proper divisors (341973).

865707 is a wasteful number, since it uses less digits than its factorization.

865707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 865707 is about 930.4337698085. The cubic root of 865707 is about 95.3067462441.

The spelling of 865707 in words is "eight hundred sixty-five thousand, seven hundred seven".