68154641 has 2 divisors, whose sum is σ = 68154642. Its totient is φ = 68154640.

The previous prime is 68154631. The next prime is 68154659. The reversal of 68154641 is 14645186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50481025 + 17673616 = 7105^2 + 4204^2 .

It is a cyclic number.

It is not a de Polignac number, because 68154641 - 2¹⁸ = 67892497 is a prime.

It is not a weakly prime, because it can be changed into another prime (68154631) 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, 34077320 + 34077321.

It is an arithmetic number, because the mean of its divisors is an integer number (34077321).

Almost surely, 2^68154641 is an apocalyptic number.

It is an amenable number.

68154641 is a deficient number, since it is larger than the sum of its proper divisors (1).

68154641 is an equidigital number, since it uses as much as digits as its factorization.

68154641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 68154641 is about 8255.5824143424. The cubic root of 68154641 is about 408.4746834071.

The spelling of 68154641 in words is "sixty-eight million, one hundred fifty-four thousand, six hundred forty-one".