6646430213 has 8 divisors (see below), whose sum is σ = 6828444960. Its totient is φ = 6464540880.

The previous prime is 6646430099. The next prime is 6646430243. The reversal of 6646430213 is 3120346466.

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 6646430213 - 2¹⁶ = 6646364677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646430243) 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, 81578 + ... + 141236.

It is an arithmetic number, because the mean of its divisors is an integer number (853555620).

Almost surely, 2^6646430213 is an apocalyptic number.

It is an amenable number.

6646430213 is a deficient number, since it is larger than the sum of its proper divisors (182014747).

6646430213 is a wasteful number, since it uses less digits than its factorization.

6646430213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62707.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 6646430213 is about 81525.6414448853. The cubic root of 6646430213 is about 1880.1658044690.

Adding to 6646430213 its reverse (3120346466), we get a palindrome (9766776679).

The spelling of 6646430213 in words is "six billion, six hundred forty-six million, four hundred thirty thousand, two hundred thirteen".