66337133 has 2 divisors, whose sum is σ = 66337134. Its totient is φ = 66337132.

The previous prime is 66337127. The next prime is 66337153. The reversal of 66337133 is 33173366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41705764 + 24631369 = 6458^2 + 4963^2 .

It is a cyclic number.

It is not a de Polignac number, because 66337133 - 2⁸ = 66336877 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66337133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66337153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33168566 + 33168567.

It is an arithmetic number, because the mean of its divisors is an integer number (33168567).

Almost surely, 2^66337133 is an apocalyptic number.

It is an amenable number.

66337133 is a deficient number, since it is larger than the sum of its proper divisors (1).

66337133 is an equidigital number, since it uses as much as digits as its factorization.

66337133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 32.

The square root of 66337133 is about 8144.7610769132. The cubic root of 66337133 is about 404.8109324284.

The spelling of 66337133 in words is "sixty-six million, three hundred thirty-seven thousand, one hundred thirty-three".