647268676 has 54 divisors (see below), whose sum is σ = 1239693630. Its totient is φ = 295640064.

The previous prime is 647268647. The next prime is 647268679. The reversal of 647268676 is 676862746.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 207360000 + 439908676 = 14400^2 + 20974^2 .

It is not an unprimeable number, because it can be changed into a prime (647268679) by changing a digit.

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 in 17 ways as a sum of consecutive naturals, for example, 1582360 + ... + 1582768.

Almost surely, 2^647268676 is an apocalyptic number.

It is an amenable number.

647268676 is a deficient number, since it is larger than the sum of its proper divisors (592424954).

647268676 is a wasteful number, since it uses less digits than its factorization.

647268676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 465 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 52.

The square root of 647268676 is about 25441.4755075251. The cubic root of 647268676 is about 865.0240789849.

The spelling of 647268676 in words is "six hundred forty-seven million, two hundred sixty-eight thousand, six hundred seventy-six".