68926191 has 4 divisors (see below), whose sum is σ = 91901592. Its totient is φ = 45950792.

The previous prime is 68926159. The next prime is 68926201. The reversal of 68926191 is 19162986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68926191 - 2⁵ = 68926159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68926391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11487696 + ... + 11487701.

It is an arithmetic number, because the mean of its divisors is an integer number (22975398).

Almost surely, 2^68926191 is an apocalyptic number.

68926191 is a deficient number, since it is larger than the sum of its proper divisors (22975401).

68926191 is a wasteful number, since it uses less digits than its factorization.

68926191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22975400.

The product of its digits is 46656, while the sum is 42.

The square root of 68926191 is about 8302.1798944615. The cubic root of 68926191 is about 410.0102932177.

The spelling of 68926191 in words is "sixty-eight million, nine hundred twenty-six thousand, one hundred ninety-one".