68118212 has 12 divisors (see below), whose sum is σ = 121161516. Its totient is φ = 33500640.

The previous prime is 68118209. The next prime is 68118223. The reversal of 68118212 is 21281186.

It can be written as a sum of positive squares in 2 ways, for example, as 35331136 + 32787076 = 5944^2 + 5726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139343 + ... + 139830.

It is an arithmetic number, because the mean of its divisors is an integer number (10096793).

Almost surely, 2^68118212 is an apocalyptic number.

It is an amenable number.

68118212 is a deficient number, since it is larger than the sum of its proper divisors (53043304).

68118212 is a wasteful number, since it uses less digits than its factorization.

68118212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279238 (or 279236 counting only the distinct ones).

The product of its digits is 1536, while the sum is 29.

The square root of 68118212 is about 8253.3757941826. The cubic root of 68118212 is about 408.4018931759.

Adding to 68118212 its reverse (21281186), we get a palindrome (89399398).

The spelling of 68118212 in words is "sixty-eight million, one hundred eighteen thousand, two hundred twelve".