68161371 has 4 divisors (see below), whose sum is σ = 90881832. Its totient is φ = 45440912.

The previous prime is 68161369. The next prime is 68161411. The reversal of 68161371 is 17316186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68161371 - 2¹ = 68161369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68161271) 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, 11360226 + ... + 11360231.

It is an arithmetic number, because the mean of its divisors is an integer number (22720458).

Almost surely, 2^68161371 is an apocalyptic number.

68161371 is a deficient number, since it is larger than the sum of its proper divisors (22720461).

68161371 is a wasteful number, since it uses less digits than its factorization.

68161371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22720460.

The product of its digits is 6048, while the sum is 33.

The square root of 68161371 is about 8255.9900072614. The cubic root of 68161371 is about 408.4881280486.

The spelling of 68161371 in words is "sixty-eight million, one hundred sixty-one thousand, three hundred seventy-one".