91684 has 6 divisors (see below), whose sum is σ = 160454. Its totient is φ = 45840.

The previous prime is 91673. The next prime is 91691. The reversal of 91684 is 48619.

It can be written as a sum of positive squares in only one way, i.e., 77284 + 14400 = 278^2 + 120^2 .

It is a plaindrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11457 + ... + 11464.

2⁹¹⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

91684 is a deficient number, since it is larger than the sum of its proper divisors (68770).

91684 is a wasteful number, since it uses less digits than its factorization.

91684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22925 (or 22923 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 91684 is about 302.7936591146. The cubic root of 91684 is about 45.0918289433.

It can be divided in two parts, 916 and 84, that added together give a cube (1000 = 10³).

The spelling of 91684 in words is "ninety-one thousand, six hundred eighty-four".