68513111 has 8 divisors (see below), whose sum is σ = 72764640. Its totient is φ = 64286208.

The previous prime is 68513099. The next prime is 68513161. The reversal of 68513111 is 11131586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68513111 - 2¹⁸ = 68250967 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 (68513161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251 + ... + 11708.

It is an arithmetic number, because the mean of its divisors is an integer number (9095580).

Almost surely, 2^68513111 is an apocalyptic number.

68513111 is a deficient number, since it is larger than the sum of its proper divisors (4251529).

68513111 is a wasteful number, since it uses less digits than its factorization.

68513111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12313.

The product of its digits is 720, while the sum is 26.

The square root of 68513111 is about 8277.2647052030. The cubic root of 68513111 is about 409.1895770101.

Adding to 68513111 its reverse (11131586), we get a palindrome (79644697).

The spelling of 68513111 in words is "sixty-eight million, five hundred thirteen thousand, one hundred eleven".