664013041 has 2 divisors, whose sum is σ = 664013042. Its totient is φ = 664013040.

The previous prime is 664013033. The next prime is 664013099. The reversal of 664013041 is 140310466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 653313600 + 10699441 = 25560^2 + 3271^2 .

It is a cyclic number.

It is not a de Polignac number, because 664013041 - 2³ = 664013033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664012997 and 664013015.

It is not a weakly prime, because it can be changed into another prime (664013011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332006520 + 332006521.

It is an arithmetic number, because the mean of its divisors is an integer number (332006521).

Almost surely, 2^664013041 is an apocalyptic number.

It is an amenable number.

664013041 is a deficient number, since it is larger than the sum of its proper divisors (1).

664013041 is an equidigital number, since it uses as much as digits as its factorization.

664013041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 664013041 is about 25768.4504966830. The cubic root of 664013041 is about 872.4198456756.

The spelling of 664013041 in words is "six hundred sixty-four million, thirteen thousand, forty-one".