664004059 has 2 divisors, whose sum is σ = 664004060. Its totient is φ = 664004058.

The previous prime is 664004057. The next prime is 664004069. The reversal of 664004059 is 950400466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664004059 - 2¹ = 664004057 is a prime.

Together with 664004057, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (664004053) 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, 332002029 + 332002030.

It is an arithmetic number, because the mean of its divisors is an integer number (332002030).

Almost surely, 2^664004059 is an apocalyptic number.

664004059 is a deficient number, since it is larger than the sum of its proper divisors (1).

664004059 is an equidigital number, since it uses as much as digits as its factorization.

664004059 is an odious number, because the sum of its binary digits is odd.

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

The square root of 664004059 is about 25768.2762132045. The cubic root of 664004059 is about 872.4159119625.

The spelling of 664004059 in words is "six hundred sixty-four million, four thousand, fifty-nine".