6740138 has 4 divisors (see below), whose sum is σ = 10110210. Its totient is φ = 3370068.

The previous prime is 6740137. The next prime is 6740141. The reversal of 6740138 is 8310476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5094049 + 1646089 = 2257^2 + 1283^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6740138.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1685033 + ... + 1685036.

Almost surely, 2^6740138 is an apocalyptic number.

6740138 is a deficient number, since it is larger than the sum of its proper divisors (3370072).

6740138 is a wasteful number, since it uses less digits than its factorization.

6740138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370071.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 6740138 is about 2596.1775748203. The cubic root of 6740138 is about 188.8960730575.

The spelling of 6740138 in words is "six million, seven hundred forty thousand, one hundred thirty-eight".