66737339 has 2 divisors, whose sum is σ = 66737340. Its totient is φ = 66737338.

The previous prime is 66737317. The next prime is 66737347. The reversal of 66737339 is 93373766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66737339 - 2¹² = 66733243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66737339.

It is not a weakly prime, because it can be changed into another prime (66737309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33368669 + 33368670.

It is an arithmetic number, because the mean of its divisors is an integer number (33368670).

Almost surely, 2^66737339 is an apocalyptic number.

66737339 is a deficient number, since it is larger than the sum of its proper divisors (1).

66737339 is an equidigital number, since it uses as much as digits as its factorization.

66737339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 44.

The square root of 66737339 is about 8169.2924418214. The cubic root of 66737339 is about 405.6233635736.

It can be divided in two parts, 66737 and 339, that added together give a palindrome (67076).

The spelling of 66737339 in words is "sixty-six million, seven hundred thirty-seven thousand, three hundred thirty-nine".