664364 has 12 divisors (see below), whose sum is σ = 1191288. Its totient is φ = 324000.

The previous prime is 664357. The next prime is 664369. The reversal of 664364 is 463466.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (664369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1862 + ... + 2189.

It is an arithmetic number, because the mean of its divisors is an integer number (99274).

2⁶⁶⁴³⁶⁴ is an apocalyptic number.

It is an amenable number.

664364 is a deficient number, since it is larger than the sum of its proper divisors (526924).

664364 is a wasteful number, since it uses less digits than its factorization.

664364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4096 (or 4094 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

The square root of 664364 is about 815.0852716127. The cubic root of 664364 is about 87.2573522210.

The spelling of 664364 in words is "six hundred sixty-four thousand, three hundred sixty-four".