66552337 has 2 divisors, whose sum is σ = 66552338. Its totient is φ = 66552336.

The previous prime is 66552293. The next prime is 66552371. The reversal of 66552337 is 73325566.

It is a happy number.

66552337 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., 61716736 + 4835601 = 7856^2 + 2199^2 .

It is a cyclic number.

It is not a de Polignac number, because 66552337 - 2¹⁵ = 66519569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66552296 and 66552305.

It is not a weakly prime, because it can be changed into another prime (66552377) 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, 33276168 + 33276169.

It is an arithmetic number, because the mean of its divisors is an integer number (33276169).

Almost surely, 2^66552337 is an apocalyptic number.

It is an amenable number.

66552337 is a deficient number, since it is larger than the sum of its proper divisors (1).

66552337 is an equidigital number, since it uses as much as digits as its factorization.

66552337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 37.

The square root of 66552337 is about 8157.9615713731. The cubic root of 66552337 is about 405.2482083661.

The spelling of 66552337 in words is "sixty-six million, five hundred fifty-two thousand, three hundred thirty-seven".