800664 has 32 divisors (see below), whose sum is σ = 2033520. Its totient is φ = 262656.

The previous prime is 800663. The next prime is 800669. The reversal of 800664 is 466008.

800664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800663) 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, 1524 + ... + 1980.

2⁸⁰⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

800664 is an abundant number, since it is smaller than the sum of its proper divisors (1232856).

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

800664 is a wasteful number, since it uses less digits than its factorization.

800664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 800664 is about 894.7983012948. The cubic root of 800664 is about 92.8574530280.

The spelling of 800664 in words is "eight hundred thousand, six hundred sixty-four".