2649887 has 2 divisors, whose sum is σ = 2649888. Its totient is φ = 2649886.

The previous prime is 2649877. The next prime is 2649893. The reversal of 2649887 is 7889462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2649887 is a prime.

It is a super-2 number, since 2×2649887² = 14043802225538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2649877) 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, 1324943 + 1324944.

It is an arithmetic number, because the mean of its divisors is an integer number (1324944).

2^2649887 is an apocalyptic number.

2649887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649887 is an equidigital number, since it uses as much as digits as its factorization.

2649887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 2649887 is about 1627.8473515659. The cubic root of 2649887 is about 138.3807833867.

The spelling of 2649887 in words is "two million, six hundred forty-nine thousand, eight hundred eighty-seven".