647041264 has 10 divisors (see below), whose sum is σ = 1253642480. Its totient is φ = 323520624.

The previous prime is 647041231. The next prime is 647041271. The reversal of 647041264 is 462140746.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20220024 + ... + 20220055.

It is an arithmetic number, because the mean of its divisors is an integer number (125364248).

Almost surely, 2^647041264 is an apocalyptic number.

It is an amenable number.

647041264 is a deficient number, since it is larger than the sum of its proper divisors (606601216).

647041264 is a wasteful number, since it uses less digits than its factorization.

647041264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40440087 (or 40440081 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 647041264 is about 25437.0057986391. The cubic root of 647041264 is about 864.9227609872.

The spelling of 647041264 in words is "six hundred forty-seven million, forty-one thousand, two hundred sixty-four".