715865 has 8 divisors (see below), whose sum is σ = 888840. Its totient is φ = 552832.

The previous prime is 715859. The next prime is 715867. The reversal of 715865 is 568517.

It can be written as a sum of positive squares in 4 ways, for example, as 63001 + 652864 = 251^2 + 808^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 715865 - 2⁴ = 715849 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 715865.

It is not an unprimeable number, because it can be changed into a prime (715867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2324 + ... + 2613.

It is an arithmetic number, because the mean of its divisors is an integer number (111105).

2⁷¹⁵⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

715865 is a deficient number, since it is larger than the sum of its proper divisors (172975).

715865 is a wasteful number, since it uses less digits than its factorization.

715865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971.

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

The square root of 715865 is about 846.0880568830. The cubic root of 715865 is about 89.4561857057.

The spelling of 715865 in words is "seven hundred fifteen thousand, eight hundred sixty-five".