664334232 has 64 divisors (see below), whose sum is σ = 1682311680. Its totient is φ = 218598912.

The previous prime is 664334207. The next prime is 664334273. The reversal of 664334232 is 232433466.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 664334193 and 664334202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320493 + ... + 1320995.

It is an arithmetic number, because the mean of its divisors is an integer number (26286120).

Almost surely, 2^664334232 is an apocalyptic number.

It is an amenable number.

664334232 is an abundant number, since it is smaller than the sum of its proper divisors (1017977448).

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

664334232 is a wasteful number, since it uses less digits than its factorization.

664334232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1108 counting only the distinct ones).

The product of its digits is 62208, while the sum is 33.

The square root of 664334232 is about 25774.6819960984. The cubic root of 664334232 is about 872.5604896172.

Adding to 664334232 its reverse (232433466), we get a palindrome (896767698).

The spelling of 664334232 in words is "six hundred sixty-four million, three hundred thirty-four thousand, two hundred thirty-two".