2666442607 has 2 divisors, whose sum is σ = 2666442608. Its totient is φ = 2666442606.

The previous prime is 2666442593. The next prime is 2666442677. The reversal of 2666442607 is 7062446662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2666442607 - 2¹⁵ = 2666409839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666442677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333221303 + 1333221304.

It is an arithmetic number, because the mean of its divisors is an integer number (1333221304).

Almost surely, 2^2666442607 is an apocalyptic number.

2666442607 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666442607 is an equidigital number, since it uses as much as digits as its factorization.

2666442607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 43.

The square root of 2666442607 is about 51637.6084554659. The cubic root of 2666442607 is about 1386.6837090394.

The spelling of 2666442607 in words is "two billion, six hundred sixty-six million, four hundred forty-two thousand, six hundred seven".