6663742 has 8 divisors (see below), whose sum is σ = 10029096. Its totient is φ = 3320712.

The previous prime is 6663739. The next prime is 6663749. The reversal of 6663742 is 2473666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6663698 and 6663707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6663749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4813 + ... + 6040.

It is an arithmetic number, because the mean of its divisors is an integer number (1253637).

Almost surely, 2^6663742 is an apocalyptic number.

6663742 is a deficient number, since it is larger than the sum of its proper divisors (3365354).

6663742 is a wasteful number, since it uses less digits than its factorization.

6663742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11162.

The product of its digits is 36288, while the sum is 34.

The square root of 6663742 is about 2581.4224760779. The cubic root of 6663742 is about 188.1796795835.

The spelling of 6663742 in words is "six million, six hundred sixty-three thousand, seven hundred forty-two".