68091786 has 32 divisors (see below), whose sum is σ = 172932480. Its totient is φ = 19454688.

The previous prime is 68091773. The next prime is 68091787. The reversal of 68091786 is 68719086.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68091787) 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, 89691 + ... + 90446.

It is an arithmetic number, because the mean of its divisors is an integer number (5404140).

Almost surely, 2^68091786 is an apocalyptic number.

68091786 is an abundant number, since it is smaller than the sum of its proper divisors (104840694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68091786 is a wasteful number, since it uses less digits than its factorization.

68091786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180155 (or 180149 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 68091786 is about 8251.7747182046. The cubic root of 68091786 is about 408.3490740936.

The spelling of 68091786 in words is "sixty-eight million, ninety-one thousand, seven hundred eighty-six".