68545441 has 2 divisors, whose sum is σ = 68545442. Its totient is φ = 68545440.

The previous prime is 68545409. The next prime is 68545457. The reversal of 68545441 is 14454586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68541841 + 3600 = 8279^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 68545441 - 2⁵ = 68545409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68545441.

It is not a weakly prime, because it can be changed into another prime (68540441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34272720 + 34272721.

It is an arithmetic number, because the mean of its divisors is an integer number (34272721).

Almost surely, 2^68545441 is an apocalyptic number.

It is an amenable number.

68545441 is a deficient number, since it is larger than the sum of its proper divisors (1).

68545441 is an equidigital number, since it uses as much as digits as its factorization.

68545441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76800, while the sum is 37.

The square root of 68545441 is about 8279.2174147077. The cubic root of 68545441 is about 409.2539297475.

It can be divided in two parts, 68545 and 441, that added together give a palindrome (68986).

The spelling of 68545441 in words is "sixty-eight million, five hundred forty-five thousand, four hundred forty-one".