68144441 has 2 divisors, whose sum is σ = 68144442. Its totient is φ = 68144440.

The previous prime is 68144389. The next prime is 68144513. The reversal of 68144441 is 14444186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51782416 + 16362025 = 7196^2 + 4045^2 .

It is a cyclic number.

It is not a de Polignac number, because 68144441 - 2¹⁴ = 68128057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 68144398 and 68144407.

It is not a weakly prime, because it can be changed into another prime (68149441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34072220 + 34072221.

It is an arithmetic number, because the mean of its divisors is an integer number (34072221).

Almost surely, 2^68144441 is an apocalyptic number.

It is an amenable number.

68144441 is a deficient number, since it is larger than the sum of its proper divisors (1).

68144441 is an equidigital number, since it uses as much as digits as its factorization.

68144441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 32.

The square root of 68144441 is about 8254.9646274227. The cubic root of 68144441 is about 408.4543049972.

The spelling of 68144441 in words is "sixty-eight million, one hundred forty-four thousand, four hundred forty-one".