91068775 has 12 divisors (see below), whose sum is σ = 129057712. Its totient is φ = 62447040.

The previous prime is 91068763. The next prime is 91068781. The reversal of 91068775 is 57786019.

It is not a de Polignac number, because 91068775 - 2⁵ = 91068743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260022 + ... + 260371.

Almost surely, 2^91068775 is an apocalyptic number.

91068775 is a deficient number, since it is larger than the sum of its proper divisors (37988937).

91068775 is a wasteful number, since it uses less digits than its factorization.

91068775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520410 (or 520405 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 91068775 is about 9542.9961228117. The cubic root of 91068775 is about 449.9074295181.

The spelling of 91068775 in words is "ninety-one million, sixty-eight thousand, seven hundred seventy-five".