868165 has 8 divisors (see below), whose sum is σ = 1046808. Its totient is φ = 691200.

The previous prime is 868157. The next prime is 868171. The reversal of 868165 is 561868.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 159201 + 708964 = 399^2 + 842^2 .

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

It is not a de Polignac number, because 868165 - 2³ = 868157 is a prime.

It is a super-3 number, since 3×868165³ = 1963035143335176375, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 868165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (130851).

2⁸⁶⁸¹⁶⁵ is an apocalyptic number.

It is an amenable number.

868165 is a deficient number, since it is larger than the sum of its proper divisors (178643).

868165 is a wasteful number, since it uses less digits than its factorization.

868165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839.

The product of its digits is 11520, while the sum is 34.

The square root of 868165 is about 931.7537228259. The cubic root of 868165 is about 95.3968624213.

The spelling of 868165 in words is "eight hundred sixty-eight thousand, one hundred sixty-five".