2666443606 has 8 divisors (see below), whose sum is σ = 4038497424. Its totient is φ = 1320277800.

The previous prime is 2666443589. The next prime is 2666443609. The reversal of 2666443606 is 6063446662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666443609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6471745 + ... + 6472156.

It is an arithmetic number, because the mean of its divisors is an integer number (504812178).

Almost surely, 2^2666443606 is an apocalyptic number.

2666443606 is a deficient number, since it is larger than the sum of its proper divisors (1372053818).

2666443606 is a wasteful number, since it uses less digits than its factorization.

2666443606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12944006.

The product of its (nonzero) digits is 746496, while the sum is 43.

The square root of 2666443606 is about 51637.6181286473. The cubic root of 2666443606 is about 1386.6838822161.

The spelling of 2666443606 in words is "two billion, six hundred sixty-six million, four hundred forty-three thousand, six hundred six".