865715 has 12 divisors (see below), whose sum is σ = 1075152. Its totient is φ = 669120.

The previous prime is 865687. The next prime is 865717. The reversal of 865715 is 517568.

It is not a de Polignac number, because 865715 - 2¹⁰ = 864691 is a prime.

It is a super-2 number, since 2×865715² = 1498924922450, which contains 22 as substring.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 8354 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (89596).

2⁸⁶⁵⁷¹⁵ is an apocalyptic number.

865715 is a deficient number, since it is larger than the sum of its proper divisors (209437).

865715 is a wasteful number, since it uses less digits than its factorization.

865715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 149 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 865715 is about 930.4380688686. The cubic root of 865715 is about 95.3070398198.

The spelling of 865715 in words is "eight hundred sixty-five thousand, seven hundred fifteen".