68246191 has 4 divisors (see below), whose sum is σ = 73495912. Its totient is φ = 62996472.

The previous prime is 68246089. The next prime is 68246197. The reversal of 68246191 is 19164286.

It is a happy number.

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 68246191 - 2⁷ = 68246063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68246191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68246197) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2624841 + ... + 2624866.

It is an arithmetic number, because the mean of its divisors is an integer number (18373978).

Almost surely, 2^68246191 is an apocalyptic number.

68246191 is a deficient number, since it is larger than the sum of its proper divisors (5249721).

68246191 is a wasteful number, since it uses less digits than its factorization.

68246191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249720.

The product of its digits is 20736, while the sum is 37.

The square root of 68246191 is about 8261.1252865454. The cubic root of 68246191 is about 408.6574986685.

The spelling of 68246191 in words is "sixty-eight million, two hundred forty-six thousand, one hundred ninety-one".