2646006666 has 16 divisors (see below), whose sum is σ = 5327532000. Its totient is φ = 876082448.

The previous prime is 2646006653. The next prime is 2646006683. The reversal of 2646006666 is 6666006462.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478976 + ... + 1480763.

It is an arithmetic number, because the mean of its divisors is an integer number (332970750).

Almost surely, 2^2646006666 is an apocalyptic number.

2646006666 is an abundant number, since it is smaller than the sum of its proper divisors (2681525334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2646006666 is a wasteful number, since it uses less digits than its factorization.

2646006666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959893.

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 2646006666 is about 51439.3493932417. The cubic root of 2646006666 is about 1383.1320491120.

The spelling of 2646006666 in words is "two billion, six hundred forty-six million, six thousand, six hundred sixty-six".