68632133 has 2 divisors, whose sum is σ = 68632134. Its totient is φ = 68632132.

The previous prime is 68632129. The next prime is 68632139. The reversal of 68632133 is 33123686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42601729 + 26030404 = 6527^2 + 5102^2 .

It is a cyclic number.

It is not a de Polignac number, because 68632133 - 2² = 68632129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68632133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68632139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34316066 + 34316067.

It is an arithmetic number, because the mean of its divisors is an integer number (34316067).

Almost surely, 2^68632133 is an apocalyptic number.

It is an amenable number.

68632133 is a deficient number, since it is larger than the sum of its proper divisors (1).

68632133 is an equidigital number, since it uses as much as digits as its factorization.

68632133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 68632133 is about 8284.4512793546. The cubic root of 68632133 is about 409.4263900134.

The spelling of 68632133 in words is "sixty-eight million, six hundred thirty-two thousand, one hundred thirty-three".