6647442 has 16 divisors (see below), whose sum is σ = 14077152. Its totient is φ = 2085440.

The previous prime is 6647411. The next prime is 6647447. The reversal of 6647442 is 2447466.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6647447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32484 + ... + 32687.

It is an arithmetic number, because the mean of its divisors is an integer number (879822).

Almost surely, 2^6647442 is an apocalyptic number.

6647442 is an abundant number, since it is smaller than the sum of its proper divisors (7429710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6647442 is a wasteful number, since it uses less digits than its factorization.

6647442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65193.

The product of its digits is 32256, while the sum is 33.

The square root of 6647442 is about 2578.2633690141. The cubic root of 6647442 is about 188.0261205596.

The spelling of 6647442 in words is "six million, six hundred forty-seven thousand, four hundred forty-two".