68144071 has 2 divisors, whose sum is σ = 68144072. Its totient is φ = 68144070.

The previous prime is 68144059. The next prime is 68144077. The reversal of 68144071 is 17044186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68144071 - 2⁵ = 68144039 is a prime.

It is a super-2 number, since 2×68144071² = 9287228824906082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68144077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34072035 + 34072036.

It is an arithmetic number, because the mean of its divisors is an integer number (34072036).

Almost surely, 2^68144071 is an apocalyptic number.

68144071 is a deficient number, since it is larger than the sum of its proper divisors (1).

68144071 is an equidigital number, since it uses as much as digits as its factorization.

68144071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 68144071 is about 8254.9422166360. The cubic root of 68144071 is about 408.4535657422.

The spelling of 68144071 in words is "sixty-eight million, one hundred forty-four thousand, seventy-one".