68286591 has 8 divisors (see below), whose sum is σ = 101165360. Its totient is φ = 45524376.

The previous prime is 68286557. The next prime is 68286611. The reversal of 68286591 is 19568286.

It is not a de Polignac number, because 68286591 - 2¹⁷ = 68155519 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 (68286191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264540 + ... + 1264593.

It is an arithmetic number, because the mean of its divisors is an integer number (12645670).

Almost surely, 2^68286591 is an apocalyptic number.

68286591 is a deficient number, since it is larger than the sum of its proper divisors (32878769).

68286591 is a wasteful number, since it uses less digits than its factorization.

68286591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529142 (or 2529136 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 68286591 is about 8263.5701122457. The cubic root of 68286591 is about 408.7381210250.

The spelling of 68286591 in words is "sixty-eight million, two hundred eighty-six thousand, five hundred ninety-one".