68138606 has 8 divisors (see below), whose sum is σ = 103501920. Its totient is φ = 33637968.

The previous prime is 68138593. The next prime is 68138633. The reversal of 68138606 is 60683186.

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

It is a self number, because there is not a number n which added to its sum of digits gives 68138606.

It is a congruent number.

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, 215471 + ... + 215786.

It is an arithmetic number, because the mean of its divisors is an integer number (12937740).

Almost surely, 2^68138606 is an apocalyptic number.

68138606 is a deficient number, since it is larger than the sum of its proper divisors (35363314).

68138606 is a wasteful number, since it uses less digits than its factorization.

68138606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431338.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 68138606 is about 8254.6111961739. The cubic root of 68138606 is about 408.4426464336.

The spelling of 68138606 in words is "sixty-eight million, one hundred thirty-eight thousand, six hundred six".