2668640826 has 32 divisors (see below), whose sum is σ = 5573589120. Its totient is φ = 850221504.

The previous prime is 2668640783. The next prime is 2668640833. The reversal of 2668640826 is 6280468662.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193860 + ... + 207168.

It is an arithmetic number, because the mean of its divisors is an integer number (174174660).

Almost surely, 2^2668640826 is an apocalyptic number.

2668640826 is an abundant number, since it is smaller than the sum of its proper divisors (2904948294).

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

2668640826 is a wasteful number, since it uses less digits than its factorization.

2668640826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14790.

The product of its (nonzero) digits is 1327104, while the sum is 48.

The square root of 2668640826 is about 51658.8891285904. The cubic root of 2668640826 is about 1387.0646656988.

The spelling of 2668640826 in words is "two billion, six hundred sixty-eight million, six hundred forty thousand, eight hundred twenty-six".