2647047656 has 32 divisors (see below), whose sum is σ = 5416498080. Its totient is φ = 1202740800.

The previous prime is 2647047629. The next prime is 2647047677. The reversal of 2647047656 is 6567407462.

It is a super-2 number, since 2×2647047656² = 14013722586270188672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2647047656.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343526 + ... + 351146.

It is an arithmetic number, because the mean of its divisors is an integer number (169265565).

Almost surely, 2^2647047656 is an apocalyptic number.

It is an amenable number.

2647047656 is an abundant number, since it is smaller than the sum of its proper divisors (2769450424).

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

2647047656 is a wasteful number, since it uses less digits than its factorization.

2647047656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11585 (or 11581 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 47.

The square root of 2647047656 is about 51449.4670137602. The cubic root of 2647047656 is about 1383.3134089290.

The spelling of 2647047656 in words is "two billion, six hundred forty-seven million, forty-seven thousand, six hundred fifty-six".