6643195 has 8 divisors (see below), whose sum is σ = 8585136. Its totient is φ = 4905696.

The previous prime is 6643181. The next prime is 6643201. The reversal of 6643195 is 5913466.

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

It is a cyclic number.

It is not a de Polignac number, because 6643195 - 2¹³ = 6635003 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 6643195.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51037 + ... + 51166.

It is an arithmetic number, because the mean of its divisors is an integer number (1073142).

Almost surely, 2^6643195 is an apocalyptic number.

6643195 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6643195 is a deficient number, since it is larger than the sum of its proper divisors (1941941).

6643195 is a wasteful number, since it uses less digits than its factorization.

6643195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102221.

The product of its digits is 19440, while the sum is 34.

The square root of 6643195 is about 2577.4396210193. The cubic root of 6643195 is about 187.9860692107.

The spelling of 6643195 in words is "six million, six hundred forty-three thousand, one hundred ninety-five".