6645114867 has 4 divisors (see below), whose sum is σ = 8860153160. Its totient is φ = 4430076576.

The previous prime is 6645114841. The next prime is 6645114899. The reversal of 6645114867 is 7684115466.

It is a happy number.

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

It is not a de Polignac number, because 6645114867 - 2⁶ = 6645114803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6645114167) 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 3 ways as a sum of consecutive naturals, for example, 1107519142 + ... + 1107519147.

It is an arithmetic number, because the mean of its divisors is an integer number (2215038290).

Almost surely, 2^6645114867 is an apocalyptic number.

6645114867 is a deficient number, since it is larger than the sum of its proper divisors (2215038293).

6645114867 is a wasteful number, since it uses less digits than its factorization.

6645114867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215038292.

The product of its digits is 967680, while the sum is 48.

The square root of 6645114867 is about 81517.5739764132. The cubic root of 6645114867 is about 1880.0417663688.

It can be divided in two parts, 66451 and 14867, that added together give a palindrome (81318).

The spelling of 6645114867 in words is "six billion, six hundred forty-five million, one hundred fourteen thousand, eight hundred sixty-seven".