6644196 has 36 divisors (see below), whose sum is σ = 18088252. Its totient is φ = 2044224.

The previous prime is 6644191. The next prime is 6644227. The reversal of 6644196 is 6914466.

6644196 = T₆₈₈ + T₆₈₉ + ... + T₇₁₄.

6644196 is a `hidden beast` number, since 6 + 644 + 1 + 9 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4284900 + 2359296 = 2070^2 + 1536^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 6644196.

It is not an unprimeable number, because it can be changed into a prime (6644191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6631 + ... + 7566.

Almost surely, 2^6644196 is an apocalyptic number.

It is an amenable number.

6644196 is an abundant number, since it is smaller than the sum of its proper divisors (11444056).

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

6644196 is a wasteful number, since it uses less digits than its factorization.

6644196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14220 (or 14215 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 6644196 is about 2577.6337986611. The cubic root of 6644196 is about 187.9955106820.

The spelling of 6644196 in words is "six million, six hundred forty-four thousand, one hundred ninety-six".