68661333 has 12 divisors (see below), whose sum is σ = 106806700. Its totient is φ = 42253056.

The previous prime is 68661289. The next prime is 68661367. The reversal of 68661333 is 33316686.

68661333 is a `hidden beast` number, since 6 + 8 + 6 + 613 + 33 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14152644 + 54508689 = 3762^2 + 7383^2 .

It is not a de Polignac number, because 68661333 - 2⁸ = 68661077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68661133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293308 + ... + 293541.

Almost surely, 2^68661333 is an apocalyptic number.

It is an amenable number.

68661333 is a deficient number, since it is larger than the sum of its proper divisors (38145367).

68661333 is a wasteful number, since it uses less digits than its factorization.

68661333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586868 (or 586865 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 68661333 is about 8286.2134295467. The cubic root of 68661333 is about 409.4844461794.

The spelling of 68661333 in words is "sixty-eight million, six hundred sixty-one thousand, three hundred thirty-three".