6783213 has 4 divisors (see below), whose sum is σ = 9044288. Its totient is φ = 4522140.

The previous prime is 6783211. The next prime is 6783223. The reversal of 6783213 is 3123876.

6783213 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 6783213 - 2¹ = 6783211 is a prime.

It is a super-3 number, since 3×6783213³ (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6783211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130533 + ... + 1130538.

It is an arithmetic number, because the mean of its divisors is an integer number (2261072).

Almost surely, 2^6783213 is an apocalyptic number.

It is an amenable number.

6783213 is a deficient number, since it is larger than the sum of its proper divisors (2261075).

6783213 is a wasteful number, since it uses less digits than its factorization.

6783213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261074.

The product of its digits is 6048, while the sum is 30.

The square root of 6783213 is about 2604.4602127888. The cubic root of 6783213 is about 189.2976190516.

It can be divided in two parts, 6783 and 213, that added together give a palindrome (6996).

The spelling of 6783213 in words is "six million, seven hundred eighty-three thousand, two hundred thirteen".