68144953 has 2 divisors, whose sum is σ = 68144954. Its totient is φ = 68144952.

The previous prime is 68144939. The next prime is 68144969. The reversal of 68144953 is 35944186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49378729 + 18766224 = 7027^2 + 4332^2 .

It is a cyclic number.

It is not a de Polignac number, because 68144953 - 2⁹ = 68144441 is a prime.

It is not a weakly prime, because it can be changed into another prime (68144933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34072476 + 34072477.

It is an arithmetic number, because the mean of its divisors is an integer number (34072477).

Almost surely, 2^68144953 is an apocalyptic number.

It is an amenable number.

68144953 is a deficient number, since it is larger than the sum of its proper divisors (1).

68144953 is an equidigital number, since it uses as much as digits as its factorization.

68144953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 68144953 is about 8254.9956390055. The cubic root of 68144953 is about 408.4553279619.

The spelling of 68144953 in words is "sixty-eight million, one hundred forty-four thousand, nine hundred fifty-three".