6645005466 has 32 divisors (see below), whose sum is σ = 14501362176. Its totient is φ = 2013198000.

The previous prime is 6645005461. The next prime is 6645005501.

It is a happy number.

6645005466 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (6645005461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420651 + ... + 436161.

It is an arithmetic number, because the mean of its divisors is an integer number (453167568).

Almost surely, 2^6645005466 is an apocalyptic number.

6645005466 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6645005466 is an abundant number, since it is smaller than the sum of its proper divisors (7856356710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6645005466 is a wasteful number, since it uses less digits than its factorization.

6645005466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22018.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 6645005466 is about 81516.9029465669. The cubic root of 6645005466 is about 1880.0314490363.

It can be divided in two parts, 664500 and 5466, that added together give a palindrome (669966).

The spelling of 6645005466 in words is "six billion, six hundred forty-five million, five thousand, four hundred sixty-six".