6668269556 has 12 divisors (see below), whose sum is σ = 12567123492. Its totient is φ = 3077662848.

The previous prime is 6668269547. The next prime is 6668269577. The reversal of 6668269556 is 6559628666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 512297956 + 6155971600 = 22634^2 + 78460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6668269495 and 6668269504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64117925 + ... + 64118028.

It is an arithmetic number, because the mean of its divisors is an integer number (1047260291).

Almost surely, 2^6668269556 is an apocalyptic number.

It is an amenable number.

6668269556 is a deficient number, since it is larger than the sum of its proper divisors (5898853936).

6668269556 is a wasteful number, since it uses less digits than its factorization.

6668269556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128235970 (or 128235968 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 59.

The square root of 6668269556 is about 81659.4731552929. The cubic root of 6668269556 is about 1882.2228833362. Note that the first 3 decimals are identical.

The spelling of 6668269556 in words is "six billion, six hundred sixty-eight million, two hundred sixty-nine thousand, five hundred fifty-six".