91680700 has 72 divisors (see below), whose sum is σ = 212607920. Its totient is φ = 34214400.

The previous prime is 91680697. The next prime is 91680713. The reversal of 91680700 is 708619.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138370 + ... + 139030.

Almost surely, 2^91680700 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91680700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106303960).

91680700 is an abundant number, since it is smaller than the sum of its proper divisors (120927220).

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

91680700 is a wasteful number, since it uses less digits than its factorization.

91680700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 91680700 is about 9575.0039164483. The cubic root of 91680700 is about 450.9128793719.

The spelling of 91680700 in words is "ninety-one million, six hundred eighty thousand, seven hundred".