6806681378 has 16 divisors (see below), whose sum is σ = 11672994240. Its totient is φ = 2916049776.

The previous prime is 6806681339. The next prime is 6806681407. The reversal of 6806681378 is 8731866086.

It is a super-2 number, since 2×6806681378² = 92661822763223957768, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52568 + ... + 127971.

It is an arithmetic number, because the mean of its divisors is an integer number (729562140).

Almost surely, 2^6806681378 is an apocalyptic number.

6806681378 is a deficient number, since it is larger than the sum of its proper divisors (4866312862).

6806681378 is a wasteful number, since it uses less digits than its factorization.

6806681378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183241.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 6806681378 is about 82502.6143706974. The cubic root of 6806681378 is about 1895.1567670588.

The spelling of 6806681378 in words is "six billion, eight hundred six million, six hundred eighty-one thousand, three hundred seventy-eight".