664066105 has 8 divisors (see below), whose sum is σ = 797920200. Its totient is φ = 530558976.

The previous prime is 664066057. The next prime is 664066129. The reversal of 664066105 is 501660466.

664066105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 215854864 + 448211241 = 14692^2 + 21171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 664066105 - 2¹⁷ = 663935033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82510 + ... + 90199.

It is an arithmetic number, because the mean of its divisors is an integer number (99740025).

Almost surely, 2^664066105 is an apocalyptic number.

It is an amenable number.

664066105 is a deficient number, since it is larger than the sum of its proper divisors (133854095).

664066105 is a wasteful number, since it uses less digits than its factorization.

664066105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173483.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 664066105 is about 25769.4801072897. The cubic root of 664066105 is about 872.4430846035.

The spelling of 664066105 in words is "six hundred sixty-four million, sixty-six thousand, one hundred five".