6664345364 has 6 divisors (see below), whose sum is σ = 11662604394. Its totient is φ = 3332172680.

The previous prime is 6664345351. The next prime is 6664345393. The reversal of 6664345364 is 4635434666.

It can be written as a sum of positive squares in only one way, i.e., 5803392400 + 860952964 = 76180^2 + 29342^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 833043167 + ... + 833043174.

It is an arithmetic number, because the mean of its divisors is an integer number (1943767399).

Almost surely, 2^6664345364 is an apocalyptic number.

It is an amenable number.

6664345364 is a deficient number, since it is larger than the sum of its proper divisors (4998259030).

6664345364 is a wasteful number, since it uses less digits than its factorization.

6664345364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666086345 (or 1666086343 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 47.

The square root of 6664345364 is about 81635.4418374764. The cubic root of 6664345364 is about 1881.8535894592.

The spelling of 6664345364 in words is "six billion, six hundred sixty-four million, three hundred forty-five thousand, three hundred sixty-four".