6445013 has 8 divisors (see below), whose sum is σ = 6552000. Its totient is φ = 6339168.

The previous prime is 6445003. The next prime is 6445051. The reversal of 6445013 is 3105446.

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 6445013 - 2²² = 2250709 is a prime.

It is a super-3 number, since 3×6445013³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6445013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27545 + ... + 27777.

It is an arithmetic number, because the mean of its divisors is an integer number (819000).

Almost surely, 2^6445013 is an apocalyptic number.

It is an amenable number.

6445013 is a deficient number, since it is larger than the sum of its proper divisors (106987).

6445013 is a wasteful number, since it uses less digits than its factorization.

6445013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 6445013 is about 2538.7030153210. The cubic root of 6445013 is about 186.0978115064.

The spelling of 6445013 in words is "six million, four hundred forty-five thousand, thirteen".