6672165647 has 16 divisors (see below), whose sum is σ = 8128281600. Its totient is φ = 5349408480.

The previous prime is 6672165623. The next prime is 6672165673. The reversal of 6672165647 is 7465612766.

It is a cyclic number.

It is not a de Polignac number, because 6672165647 - 2²⁰ = 6671117071 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6672165595 and 6672165604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6672165347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307004 + ... + 328017.

It is an arithmetic number, because the mean of its divisors is an integer number (508017600).

Almost surely, 2^6672165647 is an apocalyptic number.

6672165647 is a deficient number, since it is larger than the sum of its proper divisors (1456115953).

6672165647 is a wasteful number, since it uses less digits than its factorization.

6672165647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635126.

The product of its digits is 2540160, while the sum is 50.

The square root of 6672165647 is about 81683.3253914163. The cubic root of 6672165647 is about 1882.5893894099.

The spelling of 6672165647 in words is "six billion, six hundred seventy-two million, one hundred sixty-five thousand, six hundred forty-seven".