6740139 has 16 divisors (see below), whose sum is σ = 10330112. Its totient is φ = 3829248.

The previous prime is 6740137. The next prime is 6740141. The reversal of 6740139 is 9310476.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6740137) and next prime (6740141).

It is not a de Polignac number, because 6740139 - 2¹ = 6740137 is a prime.

It is a Duffinian number.

6740139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6740131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3222 + ... + 4884.

It is an arithmetic number, because the mean of its divisors is an integer number (645632).

Almost surely, 2^6740139 is an apocalyptic number.

6740139 is a deficient number, since it is larger than the sum of its proper divisors (3589973).

6740139 is a wasteful number, since it uses less digits than its factorization.

6740139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 6740139 is about 2596.1777674112. The cubic root of 6740139 is about 188.8960823994.

The spelling of 6740139 in words is "six million, seven hundred forty thousand, one hundred thirty-nine".