6644499 has 4 divisors (see below), whose sum is σ = 8859336. Its totient is φ = 4429664.

The previous prime is 6644483. The next prime is 6644503. The reversal of 6644499 is 9944466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6644499 - 2⁴ = 6644483 is a prime.

It is a super-2 number, since 2×6644499² = 88298733922002, which contains 22 as substring.

It is a D-number.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6644499.

It is not an unprimeable number, because it can be changed into a prime (6644459) 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 3 ways as a sum of consecutive naturals, for example, 1107414 + ... + 1107419.

It is an arithmetic number, because the mean of its divisors is an integer number (2214834).

Almost surely, 2^6644499 is an apocalyptic number.

6644499 is a deficient number, since it is larger than the sum of its proper divisors (2214837).

6644499 is a wasteful number, since it uses less digits than its factorization.

6644499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214836.

The product of its digits is 186624, while the sum is 42.

The square root of 6644499 is about 2577.6925728255. The cubic root of 6644499 is about 187.9983684029.

The spelling of 6644499 in words is "six million, six hundred forty-four thousand, four hundred ninety-nine".