868455 has 32 divisors (see below), whose sum is σ = 1766400. Its totient is φ = 396576.

The previous prime is 868453. The next prime is 868459. The reversal of 868455 is 554868.

It is a happy number.

It is not a de Polignac number, because 868455 - 2¹ = 868453 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 868455.

It is not an unprimeable number, because it can be changed into a prime (868451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486 + ... + 1404.

It is an arithmetic number, because the mean of its divisors is an integer number (55200).

2⁸⁶⁸⁴⁵⁵ is an apocalyptic number.

868455 is an abundant number, since it is smaller than the sum of its proper divisors (897945).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868455 is a wasteful number, since it uses less digits than its factorization.

868455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 934 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 868455 is about 931.9093303535. The cubic root of 868455 is about 95.4074832942.

The spelling of 868455 in words is "eight hundred sixty-eight thousand, four hundred fifty-five".