2645239 has 2 divisors, whose sum is σ = 2645240. Its totient is φ = 2645238.

The previous prime is 2645233. The next prime is 2645257. The reversal of 2645239 is 9325462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2645239 - 2⁹ = 2644727 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6 + 4⁶ + 5 + 2²¹ + 3⁹ + 9 .

It is a self number, because there is not a number n which added to its sum of digits gives 2645239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645233) 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, 1322619 + 1322620.

It is an arithmetic number, because the mean of its divisors is an integer number (1322620).

2^2645239 is an apocalyptic number.

2645239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645239 is an equidigital number, since it uses as much as digits as its factorization.

2645239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 2645239 is about 1626.4190726870. The cubic root of 2645239 is about 138.2998276944.

The spelling of 2645239 in words is "two million, six hundred forty-five thousand, two hundred thirty-nine".