6740842 has 4 divisors (see below), whose sum is σ = 10111266. Its totient is φ = 3370420.

The previous prime is 6740831. The next prime is 6740843. The reversal of 6740842 is 2480476.

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., 4888521 + 1852321 = 2211^2 + 1361^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6740843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1685209 + ... + 1685212.

Almost surely, 2^6740842 is an apocalyptic number.

6740842 is a deficient number, since it is larger than the sum of its proper divisors (3370424).

6740842 is a wasteful number, since it uses less digits than its factorization.

6740842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3370423.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 6740842 is about 2596.3131552261. The cubic root of 6740842 is about 188.9026494909.

The spelling of 6740842 in words is "six million, seven hundred forty thousand, eight hundred forty-two".