6806139 has 8 divisors (see below), whose sum is σ = 9092112. Its totient is φ = 4528800.

The previous prime is 6806119. The next prime is 6806147. The reversal of 6806139 is 9316086.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-6806139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6806119) 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, 12 + ... + 3689.

It is an arithmetic number, because the mean of its divisors is an integer number (1136514).

Almost surely, 2^6806139 is an apocalyptic number.

6806139 is a deficient number, since it is larger than the sum of its proper divisors (2285973).

6806139 is a wasteful number, since it uses less digits than its factorization.

6806139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 6806139 is about 2608.8577960479. The cubic root of 6806139 is about 189.5106428351.

The spelling of 6806139 in words is "six million, eight hundred six thousand, one hundred thirty-nine".