91968680 has 32 divisors (see below), whose sum is σ = 212525640. Its totient is φ = 35792640.

The previous prime is 91968677. The next prime is 91968739. The reversal of 91968680 is 8686919.

It can be written as a sum of positive squares in 4 ways, for example, as 91891396 + 77284 = 9586^2 + 278^2 .

It is a super-3 number, since 3×91968680³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29591 + ... + 32550.

Almost surely, 2^91968680 is an apocalyptic number.

It is an amenable number.

91968680 is an abundant number, since it is smaller than the sum of its proper divisors (120556960).

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

91968680 is a wasteful number, since it uses less digits than its factorization.

91968680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62189 (or 62185 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 91968680 is about 9590.0302397855. The cubic root of 91968680 is about 451.3845095899.

The spelling of 91968680 in words is "ninety-one million, nine hundred sixty-eight thousand, six hundred eighty".