68281723 has 2 divisors, whose sum is σ = 68281724. Its totient is φ = 68281722.

The previous prime is 68281709. The next prime is 68281751. The reversal of 68281723 is 32718286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68281723 - 2¹³ = 68273531 is a prime.

It is not a weakly prime, because it can be changed into another prime (68281793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34140861 + 34140862.

It is an arithmetic number, because the mean of its divisors is an integer number (34140862).

Almost surely, 2^68281723 is an apocalyptic number.

68281723 is a deficient number, since it is larger than the sum of its proper divisors (1).

68281723 is an equidigital number, since it uses as much as digits as its factorization.

68281723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 68281723 is about 8263.2755611803. The cubic root of 68281723 is about 408.7284081154.

The spelling of 68281723 in words is "sixty-eight million, two hundred eighty-one thousand, seven hundred twenty-three".