664225465 has 8 divisors (see below), whose sum is σ = 839021760. Its totient is φ = 503412912.

The previous prime is 664225459. The next prime is 664225477. The reversal of 664225465 is 564522466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664225465 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 3495829 + ... + 3496018.

It is an arithmetic number, because the mean of its divisors is an integer number (104877720).

Almost surely, 2^664225465 is an apocalyptic number.

It is an amenable number.

664225465 is a deficient number, since it is larger than the sum of its proper divisors (174796295).

664225465 is a wasteful number, since it uses less digits than its factorization.

664225465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991871.

The product of its digits is 345600, while the sum is 40.

The square root of 664225465 is about 25772.5719515923. The cubic root of 664225465 is about 872.5128675207.

The spelling of 664225465 in words is "six hundred sixty-four million, two hundred twenty-five thousand, four hundred sixty-five".