2668640423 has 2 divisors, whose sum is σ = 2668640424. Its totient is φ = 2668640422.

The previous prime is 2668640413. The next prime is 2668640441. The reversal of 2668640423 is 3240468662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2668640423 - 2¹⁴ = 2668624039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2668640413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334320211 + 1334320212.

It is an arithmetic number, because the mean of its divisors is an integer number (1334320212).

Almost surely, 2^2668640423 is an apocalyptic number.

2668640423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668640423 is an equidigital number, since it uses as much as digits as its factorization.

2668640423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 41.

The square root of 2668640423 is about 51658.8852280031. The cubic root of 2668640423 is about 1387.0645958771.

The spelling of 2668640423 in words is "two billion, six hundred sixty-eight million, six hundred forty thousand, four hundred twenty-three".