868404 has 12 divisors (see below), whose sum is σ = 2026304. Its totient is φ = 289464.

The previous prime is 868397. The next prime is 868409. The reversal of 868404 is 404868.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 15.

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 868404.

It is not an unprimeable number, because it can be changed into a prime (868409) by changing a digit.

868404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36172 + ... + 36195.

2⁸⁶⁸⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

868404 is an abundant number, since it is smaller than the sum of its proper divisors (1157900).

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

868404 is a wasteful number, since it uses less digits than its factorization.

868404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72374 (or 72372 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 868404 is about 931.8819667748. The cubic root of 868404 is about 95.4056156568.

The spelling of 868404 in words is "eight hundred sixty-eight thousand, four hundred four".