68193788 has 12 divisors (see below), whose sum is σ = 128519160. Its totient is φ = 31474032.

The previous prime is 68193787. The next prime is 68193823. The reversal of 68193788 is 88739186.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68193787) 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, 655658 + ... + 655761.

It is an arithmetic number, because the mean of its divisors is an integer number (10709930).

Almost surely, 2^68193788 is an apocalyptic number.

It is an amenable number.

68193788 is a deficient number, since it is larger than the sum of its proper divisors (60325372).

68193788 is a wasteful number, since it uses less digits than its factorization.

68193788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311436 (or 1311434 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 68193788 is about 8257.9530151243. The cubic root of 68193788 is about 408.5528756750.

The spelling of 68193788 in words is "sixty-eight million, one hundred ninety-three thousand, seven hundred eighty-eight".