6444659 has 8 divisors (see below), whose sum is σ = 7036512. Its totient is φ = 5866560.

The previous prime is 6444653. The next prime is 6444671. The reversal of 6444659 is 9564446.

It is a happy number.

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 6444659 - 2¹⁶ = 6379123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6444653) 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, 2447 + ... + 4344.

It is an arithmetic number, because the mean of its divisors is an integer number (879564).

Almost surely, 2^6444659 is an apocalyptic number.

6444659 is a deficient number, since it is larger than the sum of its proper divisors (591853).

6444659 is a wasteful number, since it uses less digits than its factorization.

6444659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877.

The product of its digits is 103680, while the sum is 38.

The square root of 6444659 is about 2538.6332937232. The cubic root of 6444659 is about 186.0944042295.

The spelling of 6444659 in words is "six million, four hundred forty-four thousand, six hundred fifty-nine".