68218936 has 16 divisors (see below), whose sum is σ = 129230640. Its totient is φ = 33757440.

The previous prime is 68218921. The next prime is 68218937. The reversal of 68218936 is 63981286.

It is a junction number, because it is equal to n+sod(n) for n = 68218892 and 68218901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68218937) 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, 43180 + ... + 44731.

It is an arithmetic number, because the mean of its divisors is an integer number (8076915).

Almost surely, 2^68218936 is an apocalyptic number.

It is an amenable number.

68218936 is a deficient number, since it is larger than the sum of its proper divisors (61011704).

68218936 is a wasteful number, since it uses less digits than its factorization.

68218936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88014 (or 88010 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 68218936 is about 8259.4755281434. The cubic root of 68218936 is about 408.6030905372.

The spelling of 68218936 in words is "sixty-eight million, two hundred eighteen thousand, nine hundred thirty-six".