6654665163 has 4 divisors (see below), whose sum is σ = 8872886888. Its totient is φ = 4436443440.

The previous prime is 6654665161. The next prime is 6654665219. The reversal of 6654665163 is 3615664566.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6654665163 - 2¹ = 6654665161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6654665161) 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, 1109110858 + ... + 1109110863.

It is an arithmetic number, because the mean of its divisors is an integer number (2218221722).

Almost surely, 2^6654665163 is an apocalyptic number.

6654665163 is a deficient number, since it is larger than the sum of its proper divisors (2218221725).

6654665163 is a wasteful number, since it uses less digits than its factorization.

6654665163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218221724.

The product of its digits is 2332800, while the sum is 48.

The square root of 6654665163 is about 81576.1310862436. The cubic root of 6654665163 is about 1880.9419946326.

The spelling of 6654665163 in words is "six billion, six hundred fifty-four million, six hundred sixty-five thousand, one hundred sixty-three".