68087133 has 12 divisors (see below), whose sum is σ = 99219900. Its totient is φ = 44989056.

The previous prime is 68087111. The next prime is 68087137. The reversal of 68087133 is 33178086.

It can be written as a sum of positive squares in 2 ways, for example, as 30669444 + 37417689 = 5538^2 + 6117^2 .

It is not a de Polignac number, because 68087133 - 2⁹ = 68086621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68087137) 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, 32458 + ... + 34491.

It is an arithmetic number, because the mean of its divisors is an integer number (8268325).

Almost surely, 2^68087133 is an apocalyptic number.

It is an amenable number.

68087133 is a deficient number, since it is larger than the sum of its proper divisors (31132767).

68087133 is a wasteful number, since it uses less digits than its factorization.

68087133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67068 (or 67065 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 68087133 is about 8251.4927740379. The cubic root of 68087133 is about 408.3397724747.

The spelling of 68087133 in words is "sixty-eight million, eighty-seven thousand, one hundred thirty-three".