2666397708 has 144 divisors (see below), whose sum is σ = 7792477056. Its totient is φ = 761425920.

The previous prime is 2666397703. The next prime is 2666397733. The reversal of 2666397708 is 8077936662.

It is not an unprimeable number, because it can be changed into a prime (2666397703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 578493 + ... + 583083.

It is an arithmetic number, because the mean of its divisors is an integer number (54114424).

Almost surely, 2^2666397708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666397708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3896238528).

2666397708 is an abundant number, since it is smaller than the sum of its proper divisors (5126079348).

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

2666397708 is a wasteful number, since it uses less digits than its factorization.

2666397708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4704 (or 4699 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The square root of 2666397708 is about 51637.1737026728. The cubic root of 2666397708 is about 1386.6759257528.

The spelling of 2666397708 in words is "two billion, six hundred sixty-six million, three hundred ninety-seven thousand, seven hundred eight".