68084791 has 4 divisors (see below), whose sum is σ = 68384952. Its totient is φ = 67784632.

The previous prime is 68084789. The next prime is 68084839. The reversal of 68084791 is 19748086.

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 68084791 - 2¹ = 68084789 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 (68081791) 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, 149740 + ... + 150193.

It is an arithmetic number, because the mean of its divisors is an integer number (17096238).

Almost surely, 2^68084791 is an apocalyptic number.

68084791 is a deficient number, since it is larger than the sum of its proper divisors (300161).

68084791 is a wasteful number, since it uses less digits than its factorization.

68084791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300160.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 68084791 is about 8251.3508591018. The cubic root of 68084791 is about 408.3350905195.

The spelling of 68084791 in words is "sixty-eight million, eighty-four thousand, seven hundred ninety-one".