2642287 has 2 divisors, whose sum is σ = 2642288. Its totient is φ = 2642286.

The previous prime is 2642257. The next prime is 2642291. The reversal of 2642287 is 7822462.

2642287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2642287 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 6 + 4⁷ + 2¹⁹ + 2²¹ + 8 + 7⁴ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321143 + 1321144.

It is an arithmetic number, because the mean of its divisors is an integer number (1321144).

2^2642287 is an apocalyptic number.

2642287 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642287 is an equidigital number, since it uses as much as digits as its factorization.

2642287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 31.

The square root of 2642287 is about 1625.5113041748. The cubic root of 2642287 is about 138.2483625206.

The spelling of 2642287 in words is "two million, six hundred forty-two thousand, two hundred eighty-seven".