2663081 has 2 divisors, whose sum is σ = 2663082. Its totient is φ = 2663080.

The previous prime is 2663069. The next prime is 2663107. The reversal of 2663081 is 1803662.

It is an a-pointer prime, because the next prime (2663107) can be obtained adding 2663081 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1731856 + 931225 = 1316^2 + 965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2663081 is a prime.

It is a super-2 number, since 2×2663081² = 14184000825122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2663081.

It is not a weakly prime, because it can be changed into another prime (2663051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331540 + 1331541.

It is an arithmetic number, because the mean of its divisors is an integer number (1331541).

2^2663081 is an apocalyptic number.

It is an amenable number.

2663081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663081 is an equidigital number, since it uses as much as digits as its factorization.

2663081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2663081 is about 1631.8949108322. The cubic root of 2663081 is about 138.6100729311.

The spelling of 2663081 in words is "two million, six hundred sixty-three thousand, eighty-one".