2661317 has 2 divisors, whose sum is σ = 2661318. Its totient is φ = 2661316.

The previous prime is 2661283. The next prime is 2661331. The reversal of 2661317 is 7131662.

2661317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2660161 + 1156 = 1631^2 + 34^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330658 + 1330659.

It is an arithmetic number, because the mean of its divisors is an integer number (1330659).

2^2661317 is an apocalyptic number.

It is an amenable number.

2661317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661317 is an equidigital number, since it uses as much as digits as its factorization.

2661317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 26.

The square root of 2661317 is about 1631.3543453217. The cubic root of 2661317 is about 138.5794614983.

Adding to 2661317 its reverse (7131662), we get a palindrome (9792979).

The spelling of 2661317 in words is "two million, six hundred sixty-one thousand, three hundred seventeen".