2730869 has 2 divisors, whose sum is σ = 2730870. Its totient is φ = 2730868.

The previous prime is 2730823. The next prime is 2730899. The reversal of 2730869 is 9680372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 1350244 = 1175^2 + 1162^2 .

It is a cyclic number.

It is not a de Polignac number, because 2730869 - 2²⁰ = 1682293 is a prime.

It is a super-2 number, since 2×2730869² = 14915290990322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2730899) 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, 1365434 + 1365435.

It is an arithmetic number, because the mean of its divisors is an integer number (1365435).

2^2730869 is an apocalyptic number.

It is an amenable number.

2730869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2730869 is an equidigital number, since it uses as much as digits as its factorization.

2730869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 2730869 is about 1652.5341146252. The cubic root of 2730869 is about 139.7763265078.

The spelling of 2730869 in words is "two million, seven hundred thirty thousand, eight hundred sixty-nine".