66754033 has 2 divisors, whose sum is σ = 66754034. Its totient is φ = 66754032.

The previous prime is 66754021. The next prime is 66754057. The reversal of 66754033 is 33045766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64513024 + 2241009 = 8032^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 66754033 - 2²¹ = 64656881 is a prime.

It is a super-2 number, since 2×66754033² = 8912201843530178, 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 66754033.

It is not a weakly prime, because it can be changed into another prime (66754003) 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, 33377016 + 33377017.

It is an arithmetic number, because the mean of its divisors is an integer number (33377017).

Almost surely, 2^66754033 is an apocalyptic number.

It is an amenable number.

66754033 is a deficient number, since it is larger than the sum of its proper divisors (1).

66754033 is an equidigital number, since it uses as much as digits as its factorization.

66754033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

The square root of 66754033 is about 8170.3141310478. The cubic root of 66754033 is about 405.6571822823.

Adding to 66754033 its reverse (33045766), we get a palindrome (99799799).

The spelling of 66754033 in words is "sixty-six million, seven hundred fifty-four thousand, thirty-three".