647362045664 has 36 divisors (see below), whose sum is σ = 1278062181144. Its totient is φ = 322777348032.

The previous prime is 647362045657. The next prime is 647362045697. The reversal of 647362045664 is 466540263746.

647362045664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4045709 + ... + 4202675.

It is an arithmetic number, because the mean of its divisors is an integer number (35501727254).

Almost surely, 2^647362045664 is an apocalyptic number.

It is an amenable number.

647362045664 is a deficient number, since it is larger than the sum of its proper divisors (630700135480).

647362045664 is an equidigital number, since it uses as much as digits as its factorization.

647362045664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157695 (or 157328 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 53.

The spelling of 647362045664 in words is "six hundred forty-seven billion, three hundred sixty-two million, forty-five thousand, six hundred sixty-four".