664184137 has 2 divisors, whose sum is σ = 664184138. Its totient is φ = 664184136.

The previous prime is 664184113. The next prime is 664184153. The reversal of 664184137 is 731481466.

664184137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648415296 + 15768841 = 25464^2 + 3971^2 .

It is a cyclic number.

It is not a de Polignac number, because 664184137 - 2⁷ = 664184009 is a prime.

It is a super-2 number, since 2×664184137² = 882281135684869538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 664184137.

It is not a weakly prime, because it can be changed into another prime (664184167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332092068 + 332092069.

It is an arithmetic number, because the mean of its divisors is an integer number (332092069).

Almost surely, 2^664184137 is an apocalyptic number.

It is an amenable number.

664184137 is a deficient number, since it is larger than the sum of its proper divisors (1).

664184137 is an equidigital number, since it uses as much as digits as its factorization.

664184137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 40.

The square root of 664184137 is about 25771.7701565104. The cubic root of 664184137 is about 872.4947712760.

The spelling of 664184137 in words is "six hundred sixty-four million, one hundred eighty-four thousand, one hundred thirty-seven".