68417638 has 8 divisors (see below), whose sum is σ = 103194000. Its totient is φ = 34019640.

The previous prime is 68417633. The next prime is 68417677. The reversal of 68417638 is 83671486.

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

It is a junction number, because it is equal to n+sod(n) for n = 68417594 and 68417603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68417633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94138 + ... + 94861.

It is an arithmetic number, because the mean of its divisors is an integer number (12899250).

Almost surely, 2^68417638 is an apocalyptic number.

68417638 is a deficient number, since it is larger than the sum of its proper divisors (34776362).

68417638 is a wasteful number, since it uses less digits than its factorization.

68417638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189182.

The product of its digits is 193536, while the sum is 43.

The square root of 68417638 is about 8271.4955116956. The cubic root of 68417638 is about 408.9994201366. Note that the first 3 decimals are identical.

The spelling of 68417638 in words is "sixty-eight million, four hundred seventeen thousand, six hundred thirty-eight".