664557853346 has 8 divisors (see below), whose sum is σ = 1001561125584. Its totient is φ = 330704144820.

The previous prime is 664557853339. The next prime is 664557853391. The reversal of 664557853346 is 643358755466.

664557853346 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787390400 + ... + 787391243.

It is an arithmetic number, because the mean of its divisors is an integer number (125195140698).

Almost surely, 2^664557853346 is an apocalyptic number.

664557853346 is a deficient number, since it is larger than the sum of its proper divisors (337003272238).

664557853346 is a wasteful number, since it uses less digits than its factorization.

664557853346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574781856.

The product of its digits is 217728000, while the sum is 62.

The spelling of 664557853346 in words is "six hundred sixty-four billion, five hundred fifty-seven million, eight hundred fifty-three thousand, three hundred forty-six".