6427668329 has 8 divisors (see below), whose sum is σ = 6921119520. Its totient is φ = 5947034176.

The previous prime is 6427668307. The next prime is 6427668349. The reversal of 6427668329 is 9238667246.

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 6427668329 - 2¹² = 6427664233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6427668349) 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, 3203219 + ... + 3205224.

It is an arithmetic number, because the mean of its divisors is an integer number (865139940).

Almost surely, 2^6427668329 is an apocalyptic number.

It is an amenable number.

6427668329 is a deficient number, since it is larger than the sum of its proper divisors (493451191).

6427668329 is a wasteful number, since it uses less digits than its factorization.

6427668329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408519.

The product of its digits is 5225472, while the sum is 53.

The square root of 6427668329 is about 80172.7405606170. The cubic root of 6427668329 is about 1859.3072080734.

The spelling of 6427668329 in words is "six billion, four hundred twenty-seven million, six hundred sixty-eight thousand, three hundred twenty-nine".