664334141 has 2 divisors, whose sum is σ = 664334142. Its totient is φ = 664334140.

The previous prime is 664334131. The next prime is 664334207. The reversal of 664334141 is 141433466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 654285241 + 10048900 = 25579^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 664334141 - 2¹⁸ = 664071997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 664334098 and 664334107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664334101) 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 as a sum of consecutive naturals, namely, 332167070 + 332167071.

It is an arithmetic number, because the mean of its divisors is an integer number (332167071).

Almost surely, 2^664334141 is an apocalyptic number.

It is an amenable number.

664334141 is a deficient number, since it is larger than the sum of its proper divisors (1).

664334141 is an equidigital number, since it uses as much as digits as its factorization.

664334141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 664334141 is about 25774.6802308001. The cubic root of 664334141 is about 872.5604497763.

The spelling of 664334141 in words is "six hundred sixty-four million, three hundred thirty-four thousand, one hundred forty-one".