2266639 has 2 divisors, whose sum is σ = 2266640. Its totient is φ = 2266638.

The previous prime is 2266637. The next prime is 2266679. The reversal of 2266639 is 9366622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2266639 - 2¹ = 2266637 is a prime.

Together with 2266637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2266631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1133319 + 1133320.

It is an arithmetic number, because the mean of its divisors is an integer number (1133320).

2^2266639 is an apocalyptic number.

2266639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2266639 is an equidigital number, since it uses as much as digits as its factorization.

2266639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 2266639 is about 1505.5361171357. The cubic root of 2266639 is about 131.3592879611.

The spelling of 2266639 in words is "two million, two hundred sixty-six thousand, six hundred thirty-nine".