6684742 has 4 divisors (see below), whose sum is σ = 10027116. Its totient is φ = 3342370.

The previous prime is 6684719. The next prime is 6684749. The reversal of 6684742 is 2474866.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2474866 = 2 ⋅1237433.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6684749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1671184 + ... + 1671187.

It is an arithmetic number, because the mean of its divisors is an integer number (2506779).

Almost surely, 2^6684742 is an apocalyptic number.

6684742 is a deficient number, since it is larger than the sum of its proper divisors (3342374).

6684742 is a wasteful number, since it uses less digits than its factorization.

6684742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342373.

The product of its digits is 64512, while the sum is 37.

The square root of 6684742 is about 2585.4868013587. The cubic root of 6684742 is about 188.3771476798.

The spelling of 6684742 in words is "six million, six hundred eighty-four thousand, seven hundred forty-two".