68847911 has 6 divisors (see below), whose sum is σ = 75675936. Its totient is φ = 62588900.

The previous prime is 68847907. The next prime is 68847913. The reversal of 68847911 is 11974886.

It is not a de Polignac number, because 68847911 - 2² = 68847907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68847913) 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 5 ways as a sum of consecutive naturals, for example, 284375 + ... + 284616.

It is an arithmetic number, because the mean of its divisors is an integer number (12612656).

Almost surely, 2^68847911 is an apocalyptic number.

68847911 is a deficient number, since it is larger than the sum of its proper divisors (6828025).

68847911 is a wasteful number, since it uses less digits than its factorization.

68847911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569013 (or 569002 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 68847911 is about 8297.4641306847. The cubic root of 68847911 is about 409.8550171493.

The spelling of 68847911 in words is "sixty-eight million, eight hundred forty-seven thousand, nine hundred eleven".