68073133 has 8 divisors (see below), whose sum is σ = 69320216. Its totient is φ = 66830400.

The previous prime is 68073107. The next prime is 68073149. The reversal of 68073133 is 33137086.

It can be written as a sum of positive squares in 4 ways, for example, as 13638249 + 54434884 = 3693^2 + 7378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68073133 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 68073095 and 68073104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68076133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61735 + ... + 62827.

It is an arithmetic number, because the mean of its divisors is an integer number (8665027).

Almost surely, 2^68073133 is an apocalyptic number.

It is an amenable number.

68073133 is a deficient number, since it is larger than the sum of its proper divisors (1247083).

68073133 is a wasteful number, since it uses less digits than its factorization.

68073133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 68073133 is about 8250.6443990757. The cubic root of 68073133 is about 408.3117831007.

The spelling of 68073133 in words is "sixty-eight million, seventy-three thousand, one hundred thirty-three".