664052437 has 2 divisors, whose sum is σ = 664052438. Its totient is φ = 664052436.

The previous prime is 664052371. The next prime is 664052443. The reversal of 664052437 is 734250466.

664052437 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., 392000401 + 272052036 = 19799^2 + 16494^2 .

It is a cyclic number.

It is not a de Polignac number, because 664052437 - 2⁷ = 664052309 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 664052396 and 664052405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664952437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332026218 + 332026219.

It is an arithmetic number, because the mean of its divisors is an integer number (332026219).

Almost surely, 2^664052437 is an apocalyptic number.

It is an amenable number.

664052437 is a deficient number, since it is larger than the sum of its proper divisors (1).

664052437 is an equidigital number, since it uses as much as digits as its factorization.

664052437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 664052437 is about 25769.2149084911. The cubic root of 664052437 is about 872.4370989374.

The spelling of 664052437 in words is "six hundred sixty-four million, fifty-two thousand, four hundred thirty-seven".