2756869 has 2 divisors, whose sum is σ = 2756870. Its totient is φ = 2756868.

The previous prime is 2756821. The next prime is 2756903. The reversal of 2756869 is 9686572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 1292769 = 1210^2 + 1137^2 .

It is a cyclic number.

It is not a de Polignac number, because 2756869 - 2⁹ = 2756357 is a prime.

It is a super-2 number, since 2×2756869² = 15200653366322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2756069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378434 + 1378435.

It is an arithmetic number, because the mean of its divisors is an integer number (1378435).

2^2756869 is an apocalyptic number.

It is an amenable number.

2756869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2756869 is an equidigital number, since it uses as much as digits as its factorization.

2756869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 2756869 is about 1660.3821849201. The cubic root of 2756869 is about 140.2185192905.

The spelling of 2756869 in words is "two million, seven hundred fifty-six thousand, eight hundred sixty-nine".