68106949 has 2 divisors, whose sum is σ = 68106950. Its totient is φ = 68106948.

The previous prime is 68106931. The next prime is 68106953. The reversal of 68106949 is 94960186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49984900 + 18122049 = 7070^2 + 4257^2 .

It is a cyclic number.

It is not a de Polignac number, because 68106949 - 2⁵ = 68106917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68106959) 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, 34053474 + 34053475.

It is an arithmetic number, because the mean of its divisors is an integer number (34053475).

Almost surely, 2^68106949 is an apocalyptic number.

It is an amenable number.

68106949 is a deficient number, since it is larger than the sum of its proper divisors (1).

68106949 is an equidigital number, since it uses as much as digits as its factorization.

68106949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 68106949 is about 8252.6934391143. The cubic root of 68106949 is about 408.3793828764.

The spelling of 68106949 in words is "sixty-eight million, one hundred six thousand, nine hundred forty-nine".