91687200 has 288 divisors, whose sum is σ = 341978112. Its totient is φ = 21120000.

The previous prime is 91687187. The next prime is 91687207. The reversal of 91687200 is 278619.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (91687207) 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 47 ways as a sum of consecutive naturals, for example, 607125 + ... + 607275.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^91687200 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 91687200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170989056).

91687200 is an abundant number, since it is smaller than the sum of its proper divisors (250290912).

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

91687200 is a wasteful number, since it uses less digits than its factorization.

91687200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 91687200 is about 9575.3433358810. The cubic root of 91687200 is about 450.9235354295.

The spelling of 91687200 in words is "ninety-one million, six hundred eighty-seven thousand, two hundred".