68305933 has 4 divisors (see below), whose sum is σ = 70661340. Its totient is φ = 65950528.

The previous prime is 68305873. The next prime is 68305943. The reversal of 68305933 is 33950386.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50438404 + 17867529 = 7102^2 + 4227^2 .

It is a cyclic number.

It is not a de Polignac number, because 68305933 - 2²¹ = 66208781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68305892 and 68305901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68305943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177660 + ... + 1177717.

It is an arithmetic number, because the mean of its divisors is an integer number (17665335).

Almost surely, 2^68305933 is an apocalyptic number.

It is an amenable number.

68305933 is a deficient number, since it is larger than the sum of its proper divisors (2355407).

68305933 is a wasteful number, since it uses less digits than its factorization.

68305933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355406.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 68305933 is about 8264.7403467986. The cubic root of 68305933 is about 408.7767087199.

The spelling of 68305933 in words is "sixty-eight million, three hundred five thousand, nine hundred thirty-three".