91066512 has 20 divisors (see below), whose sum is σ = 235255280. Its totient is φ = 30355488.

The previous prime is 91066489. The next prime is 91066519. The reversal of 91066512 is 21566019.

It is a super-2 number, since 2×91066512² = 16586219215692288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91066512.

It is not an unprimeable number, because it can be changed into a prime (91066519) 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 3 ways as a sum of consecutive naturals, for example, 948562 + ... + 948657.

It is an arithmetic number, because the mean of its divisors is an integer number (11762764).

Almost surely, 2^91066512 is an apocalyptic number.

It is an amenable number.

91066512 is an abundant number, since it is smaller than the sum of its proper divisors (144188768).

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

91066512 is a wasteful number, since it uses less digits than its factorization.

91066512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897230 (or 1897224 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 91066512 is about 9542.8775534427. The cubic root of 91066512 is about 449.9037028513.

The spelling of 91066512 in words is "ninety-one million, sixty-six thousand, five hundred twelve".