2659560961 has 2 divisors, whose sum is σ = 2659560962. Its totient is φ = 2659560960.

The previous prime is 2659560947. The next prime is 2659560979. The reversal of 2659560961 is 1690659562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2647617025 + 11943936 = 51455^2 + 3456^2 .

It is a cyclic number.

It is not a de Polignac number, because 2659560961 - 2¹³ = 2659552769 is a prime.

It is not a weakly prime, because it can be changed into another prime (2659560901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329780480 + 1329780481.

It is an arithmetic number, because the mean of its divisors is an integer number (1329780481).

Almost surely, 2^2659560961 is an apocalyptic number.

It is an amenable number.

2659560961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2659560961 is an equidigital number, since it uses as much as digits as its factorization.

2659560961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 49.

The square root of 2659560961 is about 51570.9313567246. The cubic root of 2659560961 is about 1385.4897477779.

The spelling of 2659560961 in words is "two billion, six hundred fifty-nine million, five hundred sixty thousand, nine hundred sixty-one".