2664240666 has 16 divisors (see below), whose sum is σ = 5329368000. Its totient is φ = 887932448.

The previous prime is 2664240647. The next prime is 2664240713. The reversal of 2664240666 is 6660424662.

2664240666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5950 + ... + 73238.

It is an arithmetic number, because the mean of its divisors is an integer number (333085500).

Almost surely, 2^2664240666 is an apocalyptic number.

2664240666 is an abundant number, since it is smaller than the sum of its proper divisors (2665127334).

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

2664240666 is a wasteful number, since it uses less digits than its factorization.

2664240666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73893.

The product of its (nonzero) digits is 497664, while the sum is 42.

The square root of 2664240666 is about 51616.2829541221. The cubic root of 2664240666 is about 1386.3018973845.

The spelling of 2664240666 in words is "two billion, six hundred sixty-four million, two hundred forty thousand, six hundred sixty-six".