68766769 has 2 divisors, whose sum is σ = 68766770. Its totient is φ = 68766768.

The previous prime is 68766767. The next prime is 68766823. The reversal of 68766769 is 96766786.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57577744 + 11189025 = 7588^2 + 3345^2 .

It is a cyclic number.

It is not a de Polignac number, because 68766769 - 2¹ = 68766767 is a prime.

It is a super-2 number, since 2×68766769² = 9457737037398722, which contains 22 as substring.

Together with 68766767, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68766767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34383384 + 34383385.

It is an arithmetic number, because the mean of its divisors is an integer number (34383385).

Almost surely, 2^68766769 is an apocalyptic number.

It is an amenable number.

68766769 is a deficient number, since it is larger than the sum of its proper divisors (1).

68766769 is an equidigital number, since it uses as much as digits as its factorization.

68766769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 55.

The square root of 68766769 is about 8292.5731229818. The cubic root of 68766769 is about 409.6939397403.

The spelling of 68766769 in words is "sixty-eight million, seven hundred sixty-six thousand, seven hundred sixty-nine".