6638346 has 48 divisors (see below), whose sum is σ = 16904160. Its totient is φ = 1856160.

The previous prime is 6638341. The next prime is 6638363. The reversal of 6638346 is 6438366.

It is a self number, because there is not a number n which added to its sum of digits gives 6638346.

It is not an unprimeable number, because it can be changed into a prime (6638341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1285 + ... + 3863.

It is an arithmetic number, because the mean of its divisors is an integer number (352170).

Almost surely, 2^6638346 is an apocalyptic number.

6638346 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6638346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8452080).

6638346 is an abundant number, since it is smaller than the sum of its proper divisors (10265814).

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

6638346 is a wasteful number, since it uses less digits than its factorization.

6638346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611 (or 2608 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 6638346 is about 2576.4987871140. The cubic root of 6638346 is about 187.9403198223.

It can be divided in two parts, 663 and 8346, that added together give a palindrome (9009).

The spelling of 6638346 in words is "six million, six hundred thirty-eight thousand, three hundred forty-six".