664583644045 has 8 divisors (see below), whose sum is σ = 797526063360. Its totient is φ = 531649788240.

The previous prime is 664583644009. The next prime is 664583644079. The reversal of 664583644045 is 540446385466.

664583644045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 664583644045 - 2⁹ = 664583643533 is a prime.

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, 1968885 + ... + 2281594.

It is an arithmetic number, because the mean of its divisors is an integer number (99690757920).

Almost surely, 2^664583644045 is an apocalyptic number.

It is an amenable number.

664583644045 is a deficient number, since it is larger than the sum of its proper divisors (132942419315).

664583644045 is a wasteful number, since it uses less digits than its factorization.

664583644045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281755.

The product of its (nonzero) digits is 33177600, while the sum is 55.

The spelling of 664583644045 in words is "six hundred sixty-four billion, five hundred eighty-three million, six hundred forty-four thousand, forty-five".