2656604617 has 2 divisors, whose sum is σ = 2656604618. Its totient is φ = 2656604616.

The previous prime is 2656604591. The next prime is 2656604633. The reversal of 2656604617 is 7164066562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2306016441 + 350588176 = 48021^2 + 18724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656604617 - 2¹¹ = 2656602569 is a prime.

It is not a weakly prime, because it can be changed into another prime (2656604647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328302308 + 1328302309.

It is an arithmetic number, because the mean of its divisors is an integer number (1328302309).

Almost surely, 2^2656604617 is an apocalyptic number.

It is an amenable number.

2656604617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656604617 is an equidigital number, since it uses as much as digits as its factorization.

2656604617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 2656604617 is about 51542.2604956360. The cubic root of 2656604617 is about 1384.9761914695.

The spelling of 2656604617 in words is "two billion, six hundred fifty-six million, six hundred four thousand, six hundred seventeen".