664814045 has 8 divisors (see below), whose sum is σ = 911745024. Its totient is φ = 455872464.

The previous prime is 664814023. The next prime is 664814077. The reversal of 664814045 is 540418466.

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

It is a cyclic number.

It is not a de Polignac number, because 664814045 - 2⁸ = 664813789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9497309 + ... + 9497378.

It is an arithmetic number, because the mean of its divisors is an integer number (113968128).

Almost surely, 2^664814045 is an apocalyptic number.

It is an amenable number.

664814045 is a deficient number, since it is larger than the sum of its proper divisors (246930979).

664814045 is a wasteful number, since it uses less digits than its factorization.

664814045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18994699.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 664814045 is about 25783.9881515641. The cubic root of 664814045 is about 872.7705069514.

The spelling of 664814045 in words is "six hundred sixty-four million, eight hundred fourteen thousand, forty-five".