6647338 has 16 divisors (see below), whose sum is σ = 10232640. Its totient is φ = 3237696.

The previous prime is 6647317. The next prime is 6647339. The reversal of 6647338 is 8337466.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6647297 and 6647306.

It is not an unprimeable number, because it can be changed into a prime (6647339) 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, 14923 + ... + 15361.

It is an arithmetic number, because the mean of its divisors is an integer number (639540).

Almost surely, 2^6647338 is an apocalyptic number.

6647338 is a deficient number, since it is larger than the sum of its proper divisors (3585302).

6647338 is a wasteful number, since it uses less digits than its factorization.

6647338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621.

The product of its digits is 72576, while the sum is 37.

The square root of 6647338 is about 2578.2432003207. The cubic root of 6647338 is about 188.0251399910.

The spelling of 6647338 in words is "six million, six hundred forty-seven thousand, three hundred thirty-eight".