73968133 has 2 divisors, whose sum is σ = 73968134. Its totient is φ = 73968132.

The previous prime is 73968131. The next prime is 73968149. The reversal of 73968133 is 33186937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 3038049 = 8422^2 + 1743^2 .

It is a cyclic number.

It is not a de Polignac number, because 73968133 - 2¹ = 73968131 is a prime.

Together with 73968131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73968131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36984066 + 36984067.

It is an arithmetic number, because the mean of its divisors is an integer number (36984067).

Almost surely, 2^73968133 is an apocalyptic number.

It is an amenable number.

73968133 is a deficient number, since it is larger than the sum of its proper divisors (1).

73968133 is an equidigital number, since it uses as much as digits as its factorization.

73968133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 73968133 is about 8600.4728358387. The cubic root of 73968133 is about 419.7733716885.

The spelling of 73968133 in words is "seventy-three million, nine hundred sixty-eight thousand, one hundred thirty-three".