6663549117 has 8 divisors (see below), whose sum is σ = 8997197440. Its totient is φ = 4386133440.

The previous prime is 6663549091. The next prime is 6663549131. The reversal of 6663549117 is 7119453666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6663549117 - 2²³ = 6655160509 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 (6663549187) 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, 14057884 + ... + 14058357.

It is an arithmetic number, because the mean of its divisors is an integer number (1124649680).

Almost surely, 2^6663549117 is an apocalyptic number.

It is an amenable number.

6663549117 is a deficient number, since it is larger than the sum of its proper divisors (2333648323).

6663549117 is a wasteful number, since it uses less digits than its factorization.

6663549117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28116323.

The product of its digits is 816480, while the sum is 48.

The square root of 6663549117 is about 81630.5648455283. The cubic root of 6663549117 is about 1881.7786393642.

It can be divided in two parts, 6663549 and 117, that added together give a palindrome (6663666).

The spelling of 6663549117 in words is "six billion, six hundred sixty-three million, five hundred forty-nine thousand, one hundred seventeen".