8264916661 has 2 divisors, whose sum is σ = 8264916662. Its totient is φ = 8264916660.

The previous prime is 8264916643. The next prime is 8264916679. The reversal of 8264916661 is 1666194628.

It is the 37115-th star number.

It is a balanced prime because it is at equal distance from previous prime (8264916643) and next prime (8264916679).

It can be written as a sum of positive squares in only one way, i.e., 8078594161 + 186322500 = 89881^2 + 13650^2 .

It is a cyclic number.

It is not a de Polignac number, because 8264916661 - 2⁵ = 8264916629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8264916601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4132458330 + 4132458331.

It is an arithmetic number, because the mean of its divisors is an integer number (4132458331).

Almost surely, 2^8264916661 is an apocalyptic number.

It is an amenable number.

8264916661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8264916661 is an equidigital number, since it uses as much as digits as its factorization.

8264916661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 49.

The square root of 8264916661 is about 90911.5870557763. The cubic root of 8264916661 is about 2021.8370913699.

The spelling of 8264916661 in words is "eight billion, two hundred sixty-four million, nine hundred sixteen thousand, six hundred sixty-one".