8268196666 has 16 divisors (see below), whose sum is σ = 12778280064. Its totient is φ = 4010327104.

The previous prime is 8268196597. The next prime is 8268196667. The reversal of 8268196666 is 6666918628.

It is a super-2 number, since 2×8268196666² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8268196666.

It is not an unprimeable number, because it can be changed into a prime (8268196667) by changing a digit.

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, 378580 + ... + 399823.

It is an arithmetic number, because the mean of its divisors is an integer number (798642504).

Almost surely, 2^8268196666 is an apocalyptic number.

8268196666 is a deficient number, since it is larger than the sum of its proper divisors (4510083398).

8268196666 is a wasteful number, since it uses less digits than its factorization.

8268196666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778565.

The product of its digits is 8957952, while the sum is 58.

The square root of 8268196666 is about 90929.6247985221. The cubic root of 8268196666 is about 2022.1045172844.

The spelling of 8268196666 in words is "eight billion, two hundred sixty-eight million, one hundred ninety-six thousand, six hundred sixty-six".