68845191 has 16 divisors (see below), whose sum is σ = 94929408. Its totient is φ = 44350400.

The previous prime is 68845099. The next prime is 68845201. The reversal of 68845191 is 19154886.

It is a cyclic number.

It is not a de Polignac number, because 68845191 - 2¹⁴ = 68828807 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68845591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10546 + ... + 15776.

It is an arithmetic number, because the mean of its divisors is an integer number (5933088).

Almost surely, 2^68845191 is an apocalyptic number.

68845191 is a deficient number, since it is larger than the sum of its proper divisors (26084217).

68845191 is a wasteful number, since it uses less digits than its factorization.

68845191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5382.

The product of its digits is 69120, while the sum is 42.

The square root of 68845191 is about 8297.3002235667. The cubic root of 68845191 is about 409.8496196468.

The spelling of 68845191 in words is "sixty-eight million, eight hundred forty-five thousand, one hundred ninety-one".