91768870 has 8 divisors (see below), whose sum is σ = 165183984. Its totient is φ = 36707544.

The previous prime is 91768861. The next prime is 91768877. The reversal of 91768870 is 7886719.

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

It is a self number, because there is not a number n which added to its sum of digits gives 91768870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91768877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4588434 + ... + 4588453.

It is an arithmetic number, because the mean of its divisors is an integer number (20647998).

Almost surely, 2^91768870 is an apocalyptic number.

91768870 is a deficient number, since it is larger than the sum of its proper divisors (73415114).

91768870 is a wasteful number, since it uses less digits than its factorization.

91768870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9176894.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 91768870 is about 9579.6069856754. The cubic root of 91768870 is about 451.0573817973.

The spelling of 91768870 in words is "ninety-one million, seven hundred sixty-eight thousand, eight hundred seventy".