2668386708 has 216 divisors, whose sum is σ = 7830182360. Its totient is φ = 761425920.

The previous prime is 2668386673. The next prime is 2668386709. The reversal of 2668386708 is 8076838662.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 685287684 + 1983099024 = 26178^2 + 44532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668386709) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14742378 + ... + 14742558.

Almost surely, 2^2668386708 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 2668386708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3915091180).

2668386708 is an abundant number, since it is smaller than the sum of its proper divisors (5161795652).

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

2668386708 is a wasteful number, since it uses less digits than its factorization.

2668386708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The square root of 2668386708 is about 51656.4294933361. The cubic root of 2668386708 is about 1387.0206371326.

It can be divided in two parts, 2668 and 386708, that added together give a square (389376 = 624²).

The spelling of 2668386708 in words is "two billion, six hundred sixty-eight million, three hundred eighty-six thousand, seven hundred eight".