664302 has 16 divisors (see below), whose sum is σ = 1354320. Its totient is φ = 217152.

The previous prime is 664289. The next prime is 664319. The reversal of 664302 is 203466.

664302 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

664302 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727 + ... + 1362.

It is an arithmetic number, because the mean of its divisors is an integer number (84645).

2⁶⁶⁴³⁰² is an apocalyptic number.

664302 is an abundant number, since it is smaller than the sum of its proper divisors (690018).

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

664302 is a wasteful number, since it uses less digits than its factorization.

664302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 664302 is about 815.0472378948. The cubic root of 664302 is about 87.2546377833.

Adding to 664302 its reverse (203466), we get a palindrome (867768).

The spelling of 664302 in words is "six hundred sixty-four thousand, three hundred two".