6642456829 has 8 divisors (see below), whose sum is σ = 6993073440. Its totient is φ = 6291941616.

The previous prime is 6642456827. The next prime is 6642456853. The reversal of 6642456829 is 9286542466.

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 6642456829 - 2¹ = 6642456827 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 (6642456827) 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, 135282 + ... + 177724.

It is an arithmetic number, because the mean of its divisors is an integer number (874134180).

Almost surely, 2^6642456829 is an apocalyptic number.

It is an amenable number.

6642456829 is a deficient number, since it is larger than the sum of its proper divisors (350616611).

6642456829 is a wasteful number, since it uses less digits than its factorization.

6642456829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50699.

The product of its digits is 4976640, while the sum is 52.

The square root of 6642456829 is about 81501.2688796929. The cubic root of 6642456829 is about 1879.7910614525.

The spelling of 6642456829 in words is "six billion, six hundred forty-two million, four hundred fifty-six thousand, eight hundred twenty-nine".