6664464045 has 24 divisors (see below), whose sum is σ = 11950075800. Its totient is φ = 3431815296.

The previous prime is 6664464043. The next prime is 6664464089. The reversal of 6664464045 is 5404644666.

It can be written as a sum of positive squares in 4 ways, for example, as 16670889 + 6647793156 = 4083^2 + 81534^2 .

It is not a de Polignac number, because 6664464045 - 2¹ = 6664464043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664464043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2552130 + ... + 2554739.

It is an arithmetic number, because the mean of its divisors is an integer number (497919825).

Almost surely, 2^6664464045 is an apocalyptic number.

It is an amenable number.

6664464045 is a deficient number, since it is larger than the sum of its proper divisors (5285611755).

6664464045 is a wasteful number, since it uses less digits than its factorization.

6664464045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106909 (or 5106906 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The square root of 6664464045 is about 81636.1687305327. The cubic root of 6664464045 is about 1881.8647602959.

The spelling of 6664464045 in words is "six billion, six hundred sixty-four million, four hundred sixty-four thousand, forty-five".