91680134 has 24 divisors (see below), whose sum is σ = 170190000. Its totient is φ = 36268128.

The previous prime is 91680131. The next prime is 91680151. The reversal of 91680134 is 43108619.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91680134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91680131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17009 + ... + 21740.

It is an arithmetic number, because the mean of its divisors is an integer number (7091250).

Almost surely, 2^91680134 is an apocalyptic number.

91680134 is a deficient number, since it is larger than the sum of its proper divisors (78509866).

91680134 is a wasteful number, since it uses less digits than its factorization.

91680134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38784 (or 38771 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 91680134 is about 9574.9743602790. The cubic root of 91680134 is about 450.9119514514.

The spelling of 91680134 in words is "ninety-one million, six hundred eighty thousand, one hundred thirty-four".