68161267 has 4 divisors (see below), whose sum is σ = 68178096. Its totient is φ = 68144440.

The previous prime is 68161243. The next prime is 68161271. The reversal of 68161267 is 76216186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76216186 = 2 ⋅38108093.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68161267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68161237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1773 + ... + 11809.

It is an arithmetic number, because the mean of its divisors is an integer number (17044524).

Almost surely, 2^68161267 is an apocalyptic number.

68161267 is a deficient number, since it is larger than the sum of its proper divisors (16829).

68161267 is a wasteful number, since it uses less digits than its factorization.

68161267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16828.

The product of its digits is 24192, while the sum is 37.

The square root of 68161267 is about 8255.9837088018. The cubic root of 68161267 is about 408.4879202927.

The spelling of 68161267 in words is "sixty-eight million, one hundred sixty-one thousand, two hundred sixty-seven".