2663761 has 2 divisors, whose sum is σ = 2663762. Its totient is φ = 2663760.

The previous prime is 2663711. The next prime is 2663779. The reversal of 2663761 is 1673662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2660161 + 3600 = 1631^2 + 60^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2663761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2663701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331880 + 1331881.

It is an arithmetic number, because the mean of its divisors is an integer number (1331881).

2^2663761 is an apocalyptic number.

It is an amenable number.

2663761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663761 is an equidigital number, since it uses as much as digits as its factorization.

2663761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 2663761 is about 1632.1032442833. The cubic root of 2663761 is about 138.6218696468.

Subtracting from 2663761 its reverse (1673662), we obtain a palindrome (990099).

The spelling of 2663761 in words is "two million, six hundred sixty-three thousand, seven hundred sixty-one".