68451727 has 2 divisors, whose sum is σ = 68451728. Its totient is φ = 68451726.

The previous prime is 68451709. The next prime is 68451731. The reversal of 68451727 is 72715486.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68451727 is a prime.

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 68451727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68451127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34225863 + 34225864.

It is an arithmetic number, because the mean of its divisors is an integer number (34225864).

Almost surely, 2^68451727 is an apocalyptic number.

68451727 is a deficient number, since it is larger than the sum of its proper divisors (1).

68451727 is an equidigital number, since it uses as much as digits as its factorization.

68451727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 68451727 is about 8273.5558860746. Note that the first 3 decimals coincide. The cubic root of 68451727 is about 409.0673366694.

The spelling of 68451727 in words is "sixty-eight million, four hundred fifty-one thousand, seven hundred twenty-seven".