68784253 has 2 divisors, whose sum is σ = 68784254. Its totient is φ = 68784252.

The previous prime is 68784239. The next prime is 68784263. The reversal of 68784253 is 35248786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68773849 + 10404 = 8293^2 + 102^2 .

It is a cyclic number.

It is not a de Polignac number, because 68784253 - 2¹³ = 68776061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68784203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34392126 + 34392127.

It is an arithmetic number, because the mean of its divisors is an integer number (34392127).

Almost surely, 2^68784253 is an apocalyptic number.

It is an amenable number.

68784253 is a deficient number, since it is larger than the sum of its proper divisors (1).

68784253 is an equidigital number, since it uses as much as digits as its factorization.

68784253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 68784253 is about 8293.6272522944. The cubic root of 68784253 is about 409.7286584567.

The spelling of 68784253 in words is "sixty-eight million, seven hundred eighty-four thousand, two hundred fifty-three".