647427364 has 12 divisors (see below), whose sum is σ = 1148518924. Its totient is φ = 319279104.

The previous prime is 647427323. The next prime is 647427367. The reversal of 647427364 is 463724746.

647427364 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 2 ways, for example, as 311804964 + 335622400 = 17658^2 + 18320^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 647427364.

It is not an unprimeable number, because it can be changed into a prime (647427367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108317 + ... + 1108900.

Almost surely, 2^647427364 is an apocalyptic number.

It is an amenable number.

647427364 is a deficient number, since it is larger than the sum of its proper divisors (501091560).

647427364 is a wasteful number, since it uses less digits than its factorization.

647427364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2217294 (or 2217292 counting only the distinct ones).

The product of its digits is 677376, while the sum is 43.

The square root of 647427364 is about 25444.5940034421. The cubic root of 647427364 is about 865.0947645852.

The spelling of 647427364 in words is "six hundred forty-seven million, four hundred twenty-seven thousand, three hundred sixty-four".