664066037 has 2 divisors, whose sum is σ = 664066038. Its totient is φ = 664066036.

The previous prime is 664066003. The next prime is 664066049. The reversal of 664066037 is 730660466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534811876 + 129254161 = 23126^2 + 11369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664066037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664066057) 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, 332033018 + 332033019.

It is an arithmetic number, because the mean of its divisors is an integer number (332033019).

Almost surely, 2^664066037 is an apocalyptic number.

It is an amenable number.

664066037 is a deficient number, since it is larger than the sum of its proper divisors (1).

664066037 is an equidigital number, since it uses as much as digits as its factorization.

664066037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 664066037 is about 25769.4787878995. The cubic root of 664066037 is about 872.4430548243.

The spelling of 664066037 in words is "six hundred sixty-four million, sixty-six thousand, thirty-seven".