68855047 has 8 divisors (see below), whose sum is σ = 70500096. Its totient is φ = 67217592.

The previous prime is 68855021. The next prime is 68855051. The reversal of 68855047 is 74055886.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68855047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68854994 and 68855012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68855147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19168 + ... + 22474.

It is an arithmetic number, because the mean of its divisors is an integer number (8812512).

Almost surely, 2^68855047 is an apocalyptic number.

68855047 is a deficient number, since it is larger than the sum of its proper divisors (1645049).

68855047 is a wasteful number, since it uses less digits than its factorization.

68855047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 68855047 is about 8297.8941304406. The cubic root of 68855047 is about 409.8691769804.

The spelling of 68855047 in words is "sixty-eight million, eight hundred fifty-five thousand, forty-seven".