68072311 has 16 divisors (see below), whose sum is σ = 72540160. Its totient is φ = 63776160.

The previous prime is 68072287. The next prime is 68072321. The reversal of 68072311 is 11327086.

It is a cyclic number.

It is not a de Polignac number, because 68072311 - 2⁷ = 68072183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68072311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68072321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297145 + ... + 297373.

It is an arithmetic number, because the mean of its divisors is an integer number (4533760).

Almost surely, 2^68072311 is an apocalyptic number.

68072311 is a deficient number, since it is larger than the sum of its proper divisors (4467849).

68072311 is a wasteful number, since it uses less digits than its factorization.

68072311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 68072311 is about 8250.5945846345. The cubic root of 68072311 is about 408.3101396054.

Adding to 68072311 its reverse (11327086), we get a palindrome (79399397).

The spelling of 68072311 in words is "sixty-eight million, seventy-two thousand, three hundred eleven".