664130653 has 16 divisors (see below), whose sum is σ = 732829680. Its totient is φ = 599044096.

The previous prime is 664130629. The next prime is 664130659. The reversal of 664130653 is 356031466.

It can be written as a sum of positive squares in 8 ways, for example, as 29997529 + 634133124 = 5477^2 + 25182^2 .

It is a de Polignac number, because none of the positive numbers 2^k-664130653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664130659) 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 15 ways as a sum of consecutive naturals, for example, 62625 + ... + 72457.

It is an arithmetic number, because the mean of its divisors is an integer number (45801855).

Almost surely, 2^664130653 is an apocalyptic number.

It is an amenable number.

664130653 is a deficient number, since it is larger than the sum of its proper divisors (68699027).

664130653 is a wasteful number, since it uses less digits than its factorization.

664130653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 664130653 is about 25770.7324886197. The cubic root of 664130653 is about 872.4713511829.

The spelling of 664130653 in words is "six hundred sixty-four million, one hundred thirty thousand, six hundred fifty-three".