664136324 has 12 divisors (see below), whose sum is σ = 1163061900. Its totient is φ = 331832928.

The previous prime is 664136287. The next prime is 664136329. The reversal of 664136324 is 423631466.

664136324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 67897600 + 596238724 = 8240^2 + 24418^2 .

It is not an unprimeable number, because it can be changed into a prime (664136329) 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, 52379 + ... + 63810.

It is an arithmetic number, because the mean of its divisors is an integer number (96921825).

Almost surely, 2^664136324 is an apocalyptic number.

It is an amenable number.

664136324 is a deficient number, since it is larger than the sum of its proper divisors (498925576).

664136324 is a wasteful number, since it uses less digits than its factorization.

664136324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117622 (or 117620 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 664136324 is about 25770.8425163012. The cubic root of 664136324 is about 872.4738345150.

The spelling of 664136324 in words is "six hundred sixty-four million, one hundred thirty-six thousand, three hundred twenty-four".