868511 has 8 divisors (see below), whose sum is σ = 1011744. Its totient is φ = 730080.

The previous prime is 868493. The next prime is 868529. The reversal of 868511 is 115868.

868511 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 (868493) and next prime (868529).

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 868511 - 2¹⁰ = 867487 is a prime.

It is a super-2 number, since 2×868511² = 1508622714242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800 + ... + 1541.

It is an arithmetic number, because the mean of its divisors is an integer number (126468).

2⁸⁶⁸⁵¹¹ is an apocalyptic number.

868511 is a deficient number, since it is larger than the sum of its proper divisors (143233).

868511 is a wasteful number, since it uses less digits than its factorization.

868511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401.

The product of its digits is 1920, while the sum is 29.

The square root of 868511 is about 931.9393757107. The cubic root of 868511 is about 95.4095339490.

The spelling of 868511 in words is "eight hundred sixty-eight thousand, five hundred eleven".