91710868 has 6 divisors (see below), whose sum is σ = 160494026. Its totient is φ = 45855432.

The previous prime is 91710793. The next prime is 91710887. The reversal of 91710868 is 86801719.

It can be written as a sum of positive squares in only one way, i.e., 89643024 + 2067844 = 9468^2 + 1438^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91710868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11463855 + ... + 11463862.

Almost surely, 2^91710868 is an apocalyptic number.

It is an amenable number.

91710868 is a deficient number, since it is larger than the sum of its proper divisors (68783158).

91710868 is a wasteful number, since it uses less digits than its factorization.

91710868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22927721 (or 22927719 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 91710868 is about 9576.5791387113. The cubic root of 91710868 is about 450.9623323391.

The spelling of 91710868 in words is "ninety-one million, seven hundred ten thousand, eight hundred sixty-eight".