6800139 has 8 divisors (see below), whose sum is σ = 10074320. Its totient is φ = 4533408.

The previous prime is 6800117. The next prime is 6800147. The reversal of 6800139 is 9310086.

It is not a de Polignac number, because 6800139 - 2¹⁶ = 6734603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 251857 = 6800139 / (6 + 8 + 0 + 0 + 1 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6800179) 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, 125902 + ... + 125955.

It is an arithmetic number, because the mean of its divisors is an integer number (1259290).

Almost surely, 2^6800139 is an apocalyptic number.

6800139 is a deficient number, since it is larger than the sum of its proper divisors (3274181).

6800139 is a wasteful number, since it uses less digits than its factorization.

6800139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251866 (or 251860 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 6800139 is about 2607.7076139782. The cubic root of 6800139 is about 189.4549383135.

The spelling of 6800139 in words is "six million, eight hundred thousand, one hundred thirty-nine".