91666032 has 40 divisors (see below), whose sum is σ = 249269760. Its totient is φ = 28946880.

The previous prime is 91666031. The next prime is 91666033. The reversal of 91666032 is 23066619.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91666031) and next prime (91666033).

It is a super-2 number, since 2×91666032² = 16805322845250048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91665984 and 91666002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91666031) 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, 49344 + ... + 51167.

It is an arithmetic number, because the mean of its divisors is an integer number (6231744).

Almost surely, 2^91666032 is an apocalyptic number.

It is an amenable number.

91666032 is an abundant number, since it is smaller than the sum of its proper divisors (157603728).

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

91666032 is a wasteful number, since it uses less digits than its factorization.

91666032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100541 (or 100535 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 91666032 is about 9574.2379331203. The cubic root of 91666032 is about 450.8888308976. Note that the first 4 decimals are identical.

The spelling of 91666032 in words is "ninety-one million, six hundred sixty-six thousand, thirty-two".