6806666740 has 24 divisors (see below), whose sum is σ = 14435529192. Its totient is φ = 2695708800.

The previous prime is 6806666719. The next prime is 6806666743. The reversal of 6806666740 is 476666086.

It can be written as a sum of positive squares in 4 ways, for example, as 485144676 + 6321522064 = 22026^2 + 79508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6806666743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1682799 + ... + 1686838.

It is an arithmetic number, because the mean of its divisors is an integer number (601480383).

Almost surely, 2^6806666740 is an apocalyptic number.

It is an amenable number.

6806666740 is an abundant number, since it is smaller than the sum of its proper divisors (7628862452).

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

6806666740 is a wasteful number, since it uses less digits than its factorization.

6806666740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369747 (or 3369745 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 6806666740 is about 82502.5256583094. The cubic root of 6806666740 is about 1895.1554085248.

The spelling of 6806666740 in words is "six billion, eight hundred six million, six hundred sixty-six thousand, seven hundred forty".