91875768 has 32 divisors (see below), whose sum is σ = 232275600. Its totient is φ = 30280448.

The previous prime is 91875743. The next prime is 91875809. The reversal of 91875768 is 86757819.

It is a self number, because there is not a number n which added to its sum of digits gives 91875768.

It is a congruent number.

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, 19371 + ... + 23642.

Almost surely, 2^91875768 is an apocalyptic number.

It is an amenable number.

91875768 is an abundant number, since it is smaller than the sum of its proper divisors (140399832).

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

91875768 is a wasteful number, since it uses less digits than its factorization.

91875768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43111 (or 43107 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The square root of 91875768 is about 9585.1848182495. The cubic root of 91875768 is about 451.2324535909.

It can be divided in two parts, 91875 and 768, that multiplied together give a square (70560000 = 8400²).

The spelling of 91875768 in words is "ninety-one million, eight hundred seventy-five thousand, seven hundred sixty-eight".