6643713 has 4 divisors (see below), whose sum is σ = 8858288. Its totient is φ = 4429140.

The previous prime is 6643699. The next prime is 6643723. The reversal of 6643713 is 3173466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6643713 - 2⁶ = 6643649 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6643723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107283 + ... + 1107288.

It is an arithmetic number, because the mean of its divisors is an integer number (2214572).

It is a Proth number, since it is equal to 811 ⋅ 2¹³ + 1 and 811 < 2¹³.

Almost surely, 2^6643713 is an apocalyptic number.

It is an amenable number.

6643713 is a deficient number, since it is larger than the sum of its proper divisors (2214575).

6643713 is a wasteful number, since it uses less digits than its factorization.

6643713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214574.

The product of its digits is 9072, while the sum is 30.

The square root of 6643713 is about 2577.5401063805. The cubic root of 6643713 is about 187.9909551254.

The spelling of 6643713 in words is "six million, six hundred forty-three thousand, seven hundred thirteen".