6678742 has 16 divisors (see below), whose sum is σ = 11666592. Its totient is φ = 2808000.

The previous prime is 6678713. The next prime is 6678743. The reversal of 6678742 is 2478766.

It is a junction number, because it is equal to n+sod(n) for n = 6678695 and 6678704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678743) 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 7 ways as a sum of consecutive naturals, for example, 3759 + ... + 5242.

It is an arithmetic number, because the mean of its divisors is an integer number (729162).

Almost surely, 2^6678742 is an apocalyptic number.

6678742 is a deficient number, since it is larger than the sum of its proper divisors (4987850).

6678742 is a wasteful number, since it uses less digits than its factorization.

6678742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063.

The product of its digits is 112896, while the sum is 40.

The square root of 6678742 is about 2584.3262177984. The cubic root of 6678742 is about 188.3207704745.

It can be divided in two parts, 6678 and 742, that multiplied together give a square (4955076 = 2226²).

The spelling of 6678742 in words is "six million, six hundred seventy-eight thousand, seven hundred forty-two".