2656604647 has 2 divisors, whose sum is σ = 2656604648. Its totient is φ = 2656604646.

The previous prime is 2656604633. The next prime is 2656604651. The reversal of 2656604647 is 7464066562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2656604647 - 2⁷ = 2656604519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2656604597 and 2656604606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656604617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328302323 + 1328302324.

It is an arithmetic number, because the mean of its divisors is an integer number (1328302324).

Almost surely, 2^2656604647 is an apocalyptic number.

2656604647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656604647 is an equidigital number, since it uses as much as digits as its factorization.

2656604647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The square root of 2656604647 is about 51542.2607866593. The cubic root of 2656604647 is about 1384.9761966828.

The spelling of 2656604647 in words is "two billion, six hundred fifty-six million, six hundred four thousand, six hundred forty-seven".