91085330 has 16 divisors (see below), whose sum is σ = 187375680. Its totient is φ = 31229232.

The previous prime is 91085327. The next prime is 91085381. The reversal of 91085330 is 3358019.

It is a junction number, because it is equal to n+sod(n) for n = 91085293 and 91085302.

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, 650540 + ... + 650679.

It is an arithmetic number, because the mean of its divisors is an integer number (11710980).

Almost surely, 2^91085330 is an apocalyptic number.

91085330 is an abundant number, since it is smaller than the sum of its proper divisors (96290350).

91085330 is a wasteful number, since it uses less digits than its factorization.

91085330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301233.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 91085330 is about 9543.8634734577. The cubic root of 91085330 is about 449.9346901103.

The spelling of 91085330 in words is "ninety-one million, eighty-five thousand, three hundred thirty".