91386684 has 48 divisors (see below), whose sum is σ = 237484800. Its totient is φ = 30390768.

The previous prime is 91386683. The next prime is 91386689. The reversal of 91386684 is 48668319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91386683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66169 + ... + 67535.

It is an arithmetic number, because the mean of its divisors is an integer number (4947600).

Almost surely, 2^91386684 is an apocalyptic number.

It is an amenable number.

91386684 is an abundant number, since it is smaller than the sum of its proper divisors (146098116).

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

91386684 is a wasteful number, since it uses less digits than its factorization.

91386684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1991 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 91386684 is about 9559.6382776756. The cubic root of 91386684 is about 450.4303438780.

The spelling of 91386684 in words is "ninety-one million, three hundred eighty-six thousand, six hundred eighty-four".