664353164 has 24 divisors (see below), whose sum is σ = 1224867840. Its totient is φ = 314421264.

The previous prime is 664353121. The next prime is 664353169. The reversal of 664353164 is 461353466.

664353164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (664353169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105077 + ... + 111219.

It is an arithmetic number, because the mean of its divisors is an integer number (51036160).

Almost surely, 2^664353164 is an apocalyptic number.

It is an amenable number.

664353164 is a deficient number, since it is larger than the sum of its proper divisors (560514676).

664353164 is a wasteful number, since it uses less digits than its factorization.

664353164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7589 (or 7587 counting only the distinct ones).

The product of its digits is 155520, while the sum is 38.

The square root of 664353164 is about 25775.0492531052. The cubic root of 664353164 is about 872.5687781951.

The spelling of 664353164 in words is "six hundred sixty-four million, three hundred fifty-three thousand, one hundred sixty-four".