68161711 has 4 divisors (see below), whose sum is σ = 68179752. Its totient is φ = 68143672.

The previous prime is 68161699. The next prime is 68161729. The reversal of 68161711 is 11716186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11716186 = 2 ⋅5858093.

It is a cyclic number.

It is not a de Polignac number, because 68161711 - 2¹⁷ = 68030639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68161741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940 + ... + 11713.

It is an arithmetic number, because the mean of its divisors is an integer number (17044938).

Almost surely, 2^68161711 is an apocalyptic number.

68161711 is a deficient number, since it is larger than the sum of its proper divisors (18041).

68161711 is a wasteful number, since it uses less digits than its factorization.

68161711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18040.

The product of its digits is 2016, while the sum is 31.

The square root of 68161711 is about 8256.0105983459. The cubic root of 68161711 is about 408.4888072492.

Adding to 68161711 its reverse (11716186), we get a palindrome (79877897).

The spelling of 68161711 in words is "sixty-eight million, one hundred sixty-one thousand, seven hundred eleven".