2260816721 has 2 divisors, whose sum is σ = 2260816722. Its totient is φ = 2260816720.

The previous prime is 2260816697. The next prime is 2260816729. The reversal of 2260816721 is 1276180622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1904362321 + 356454400 = 43639^2 + 18880^2 .

It is a cyclic number.

It is not a de Polignac number, because 2260816721 - 2¹⁸ = 2260554577 is a prime.

It is a super-2 number, since 2×2260816721² = 10222584491906383682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2260816729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130408360 + 1130408361.

It is an arithmetic number, because the mean of its divisors is an integer number (1130408361).

Almost surely, 2^2260816721 is an apocalyptic number.

It is an amenable number.

2260816721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2260816721 is an equidigital number, since it uses as much as digits as its factorization.

2260816721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2260816721 is about 47548.0464477774. The cubic root of 2260816721 is about 1312.4671802647.

The spelling of 2260816721 in words is "two billion, two hundred sixty million, eight hundred sixteen thousand, seven hundred twenty-one".