91166016 has 56 divisors (see below), whose sum is σ = 241970560. Its totient is φ = 30292992.

The previous prime is 91166011. The next prime is 91166017. The reversal of 91166016 is 61066119.

It is a happy number.

It is a super-2 number, since 2×91166016² = 16622484946624512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91166011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87225 + ... + 88263.

Almost surely, 2^91166016 is an apocalyptic number.

91166016 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91166016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120985280).

91166016 is an abundant number, since it is smaller than the sum of its proper divisors (150804544).

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

91166016 is a wasteful number, since it uses less digits than its factorization.

91166016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 91166016 is about 9548.0896518623. The cubic root of 91166016 is about 450.0675059221.

The spelling of 91166016 in words is "ninety-one million, one hundred sixty-six thousand, sixteen".