647404264 has 32 divisors (see below), whose sum is σ = 1308663720. Its totient is φ = 298480896.

The previous prime is 647404229. The next prime is 647404267. The reversal of 647404264 is 462404746.

647404264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101808100 + 545596164 = 10090^2 + 23358^2 .

It is not an unprimeable number, because it can be changed into a prime (647404267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113382 + ... + 118954.

Almost surely, 2^647404264 is an apocalyptic number.

It is an amenable number.

647404264 is an abundant number, since it is smaller than the sum of its proper divisors (661259456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647404264 is a wasteful number, since it uses less digits than its factorization.

647404264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709 (or 6705 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 37.

The square root of 647404264 is about 25444.1400719301. The cubic root of 647404264 is about 865.0844756952.

The spelling of 647404264 in words is "six hundred forty-seven million, four hundred four thousand, two hundred sixty-four".