68917845 has 16 divisors (see below), whose sum is σ = 116072640. Its totient is φ = 34821504.

The previous prime is 68917831. The next prime is 68917853. The reversal of 68917845 is 54871986.

It is not a de Polignac number, because 68917845 - 2⁶ = 68917781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68917794 and 68917803.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 120624 + ... + 121193.

It is an arithmetic number, because the mean of its divisors is an integer number (7254540).

Almost surely, 2^68917845 is an apocalyptic number.

It is an amenable number.

68917845 is a deficient number, since it is larger than the sum of its proper divisors (47154795).

68917845 is a wasteful number, since it uses less digits than its factorization.

68917845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241844.

The product of its digits is 483840, while the sum is 48.

The square root of 68917845 is about 8301.6772401726. The cubic root of 68917845 is about 409.9937437078.

The spelling of 68917845 in words is "sixty-eight million, nine hundred seventeen thousand, eight hundred forty-five".