2660964641 has 2 divisors, whose sum is σ = 2660964642. Its totient is φ = 2660964640.

The previous prime is 2660964613. The next prime is 2660964667. The reversal of 2660964641 is 1464690662.

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., 1965060241 + 695904400 = 44329^2 + 26380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660964641 - 2¹⁸ = 2660702497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2660964592 and 2660964601.

It is not a weakly prime, because it can be changed into another prime (2660964941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330482320 + 1330482321.

It is an arithmetic number, because the mean of its divisors is an integer number (1330482321).

Almost surely, 2^2660964641 is an apocalyptic number.

It is an amenable number.

2660964641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660964641 is an equidigital number, since it uses as much as digits as its factorization.

2660964641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 2660964641 is about 51584.5387785914. The cubic root of 2660964641 is about 1385.7334524387.

The spelling of 2660964641 in words is "two billion, six hundred sixty million, nine hundred sixty-four thousand, six hundred forty-one".