6726139 has 8 divisors (see below), whose sum is σ = 7784960. Its totient is φ = 5691816.

The previous prime is 6726131. The next prime is 6726151. The reversal of 6726139 is 9316276.

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

It is a cyclic number.

It is not a de Polignac number, because 6726139 - 2³ = 6726131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6726131) 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, 5529 + ... + 6634.

It is an arithmetic number, because the mean of its divisors is an integer number (973120).

Almost surely, 2^6726139 is an apocalyptic number.

6726139 is a deficient number, since it is larger than the sum of its proper divisors (1058821).

6726139 is a wasteful number, since it uses less digits than its factorization.

6726139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12249.

The product of its digits is 13608, while the sum is 34.

The square root of 6726139 is about 2593.4800943905. The cubic root of 6726139 is about 188.7652058565.

The spelling of 6726139 in words is "six million, seven hundred twenty-six thousand, one hundred thirty-nine".