68105449 has 4 divisors (see below), whose sum is σ = 68181120. Its totient is φ = 68029780.

The previous prime is 68105437. The next prime is 68105467. The reversal of 68105449 is 94450186.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68105449 - 2⁷ = 68105321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68105549) 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 in 3 ways as a sum of consecutive naturals, for example, 36469 + ... + 38290.

It is an arithmetic number, because the mean of its divisors is an integer number (17045280).

Almost surely, 2^68105449 is an apocalyptic number.

It is an amenable number.

68105449 is a deficient number, since it is larger than the sum of its proper divisors (75671).

68105449 is an equidigital number, since it uses as much as digits as its factorization.

68105449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75670.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 68105449 is about 8252.6025591931. The cubic root of 68105449 is about 408.3763847801.

The spelling of 68105449 in words is "sixty-eight million, one hundred five thousand, four hundred forty-nine".