68385847 has 4 divisors (see below), whose sum is σ = 69676200. Its totient is φ = 67095496.

The previous prime is 68385841. The next prime is 68385853. The reversal of 68385847 is 74858386.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68385841) and next prime (68385853).

It is a cyclic number.

It is not a de Polignac number, because 68385847 - 2³ = 68385839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68385847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68385841) 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, 645097 + ... + 645202.

It is an arithmetic number, because the mean of its divisors is an integer number (17419050).

Almost surely, 2^68385847 is an apocalyptic number.

68385847 is a deficient number, since it is larger than the sum of its proper divisors (1290353).

68385847 is a wasteful number, since it uses less digits than its factorization.

68385847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290352.

The product of its digits is 1290240, while the sum is 49.

The square root of 68385847 is about 8269.5735682077. The cubic root of 68385847 is about 408.9360616451.

The spelling of 68385847 in words is "sixty-eight million, three hundred eighty-five thousand, eight hundred forty-seven".