68825789 has 2 divisors, whose sum is σ = 68825790. Its totient is φ = 68825788.

The previous prime is 68825759. The next prime is 68825791. The reversal of 68825789 is 98752886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45225625 + 23600164 = 6725^2 + 4858^2 .

It is a cyclic number.

It is not a de Polignac number, because 68825789 - 2¹⁶ = 68760253 is a prime.

Together with 68825791, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68825789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68825749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34412894 + 34412895.

It is an arithmetic number, because the mean of its divisors is an integer number (34412895).

Almost surely, 2^68825789 is an apocalyptic number.

It is an amenable number.

68825789 is a deficient number, since it is larger than the sum of its proper divisors (1).

68825789 is an equidigital number, since it uses as much as digits as its factorization.

68825789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 53.

The square root of 68825789 is about 8296.1309656972. The cubic root of 68825789 is about 409.8111146603.

The spelling of 68825789 in words is "sixty-eight million, eight hundred twenty-five thousand, seven hundred eighty-nine".