33666673 has 2 divisors, whose sum is σ = 33666674.
Its totient is φ = 33666672.
The previous prime is 33666667. The next prime is 33666691. The reversal of 33666673 is 37666633.
Subtracting from 33666673 its sum of digits (40), we obtain a palindrome (33666633).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 25070049 + 8596624 = 5007^2 + 2932^2
It is an emirp because it is prime and its reverse (37666633) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 33666673 - 225 = 112241 is a prime.
It is a super-2 number, since 2×336666732 = 2266889741777858, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (33666173) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16833336 + 16833337.
It is an arithmetic number, because the mean of its divisors is an integer number (16833337).
Almost surely, 233666673 is an apocalyptic number.
It is an amenable number.
33666673 is a deficient number, since it is larger than the sum of its proper divisors (1).
33666673 is an equidigital number, since it uses as much as digits as its factorization.
33666673 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 244944, while the sum is 40.
The square root of 33666673 is about 5802.2989409371.
The cubic root of 33666673 is about 322.8990249472.
The spelling of 33666673 in words is "thirty-three million, six hundred sixty-six thousand, six hundred seventy-three".