664026332 has 6 divisors (see below), whose sum is σ = 1162046088. Its totient is φ = 332013164.

The previous prime is 664026331. The next prime is 664026361. The reversal of 664026332 is 233620466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664026331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83003288 + ... + 83003295.

It is an arithmetic number, because the mean of its divisors is an integer number (193674348).

Almost surely, 2^664026332 is an apocalyptic number.

It is an amenable number.

664026332 is a deficient number, since it is larger than the sum of its proper divisors (498019756).

664026332 is a wasteful number, since it uses less digits than its factorization.

664026332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166006587 (or 166006585 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 664026332 is about 25768.7083882759. The cubic root of 664026332 is about 872.4256664724.

Adding to 664026332 its reverse (233620466), we get a palindrome (897646798).

The spelling of 664026332 in words is "six hundred sixty-four million, twenty-six thousand, three hundred thirty-two".