647677652 has 12 divisors (see below), whose sum is σ = 1134049140. Its totient is φ = 323663616.

The previous prime is 647677621. The next prime is 647677661. The reversal of 647677652 is 256776746.

647677652 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 215619856 + 432057796 = 14684^2 + 20786^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 647677652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35303 + ... + 50414.

It is an arithmetic number, because the mean of its divisors is an integer number (94504095).

Almost surely, 2^647677652 is an apocalyptic number.

It is an amenable number.

647677652 is a deficient number, since it is larger than the sum of its proper divisors (486371488).

647677652 is a wasteful number, since it uses less digits than its factorization.

647677652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87610 (or 87608 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 50.

The square root of 647677652 is about 25449.5118224299. The cubic root of 647677652 is about 865.2062287971.

The spelling of 647677652 in words is "six hundred forty-seven million, six hundred seventy-seven thousand, six hundred fifty-two".