68388767 has 2 divisors, whose sum is σ = 68388768. Its totient is φ = 68388766.

The previous prime is 68388743. The next prime is 68388781. The reversal of 68388767 is 76788386.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68388767 - 2¹⁴ = 68372383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68388797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34194383 + 34194384.

It is an arithmetic number, because the mean of its divisors is an integer number (34194384).

Almost surely, 2^68388767 is an apocalyptic number.

68388767 is a deficient number, since it is larger than the sum of its proper divisors (1).

68388767 is an equidigital number, since it uses as much as digits as its factorization.

68388767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 53.

The square root of 68388767 is about 8269.7501171438. The cubic root of 68388767 is about 408.9418819347.

The spelling of 68388767 in words is "sixty-eight million, three hundred eighty-eight thousand, seven hundred sixty-seven".