68784113 has 2 divisors, whose sum is σ = 68784114. Its totient is φ = 68784112.

The previous prime is 68784109. The next prime is 68784137. The reversal of 68784113 is 31148786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68277169 + 506944 = 8263^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 68784113 - 2² = 68784109 is a prime.

It is not a weakly prime, because it can be changed into another prime (68784173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34392056 + 34392057.

It is an arithmetic number, because the mean of its divisors is an integer number (34392057).

Almost surely, 2^68784113 is an apocalyptic number.

It is an amenable number.

68784113 is a deficient number, since it is larger than the sum of its proper divisors (1).

68784113 is an equidigital number, since it uses as much as digits as its factorization.

68784113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 68784113 is about 8293.6188120747. The cubic root of 68784113 is about 409.7283804762.

The spelling of 68784113 in words is "sixty-eight million, seven hundred eighty-four thousand, one hundred thirteen".