68726791 has 8 divisors (see below), whose sum is σ = 79717760. Its totient is φ = 58029048.

The previous prime is 68726773. The next prime is 68726821. The reversal of 68726791 is 19762786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68726791 - 2⁵ = 68726759 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 (68726711) 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, 72801 + ... + 73738.

It is an arithmetic number, because the mean of its divisors is an integer number (9964720).

Almost surely, 2^68726791 is an apocalyptic number.

68726791 is a deficient number, since it is larger than the sum of its proper divisors (10990969).

68726791 is a wasteful number, since it uses less digits than its factorization.

68726791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146613.

The product of its digits is 254016, while the sum is 46.

The square root of 68726791 is about 8290.1623023919. The cubic root of 68726791 is about 409.6145316214.

The spelling of 68726791 in words is "sixty-eight million, seven hundred twenty-six thousand, seven hundred ninety-one".