5605661497 has 2 divisors, whose sum is σ = 5605661498. Its totient is φ = 5605661496.

The previous prime is 5605661393. The next prime is 5605661507. The reversal of 5605661497 is 7941665065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5557553401 + 48108096 = 74549^2 + 6936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5605661497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5605661497.

It is not a weakly prime, because it can be changed into another prime (5605631497) by changing a digit.

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 as a sum of consecutive naturals, namely, 2802830748 + 2802830749.

It is an arithmetic number, because the mean of its divisors is an integer number (2802830749).

Almost surely, 2^5605661497 is an apocalyptic number.

It is an amenable number.

5605661497 is a deficient number, since it is larger than the sum of its proper divisors (1).

5605661497 is an equidigital number, since it uses as much as digits as its factorization.

5605661497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 5605661497 is about 74870.9656475726. The cubic root of 5605661497 is about 1776.4062383388.

The spelling of 5605661497 in words is "five billion, six hundred five million, six hundred sixty-one thousand, four hundred ninety-seven".