91684654 has 4 divisors (see below), whose sum is σ = 137526984. Its totient is φ = 45842326.

The previous prime is 91684627. The next prime is 91684657. The reversal of 91684654 is 45648619.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91684654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91684657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22921162 + ... + 22921165.

It is an arithmetic number, because the mean of its divisors is an integer number (34381746).

Almost surely, 2^91684654 is an apocalyptic number.

91684654 is a deficient number, since it is larger than the sum of its proper divisors (45842330).

91684654 is a wasteful number, since it uses less digits than its factorization.

91684654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45842329.

The product of its digits is 207360, while the sum is 43.

The square root of 91684654 is about 9575.2103893335. The cubic root of 91684654 is about 450.9193615937.

The spelling of 91684654 in words is "ninety-one million, six hundred eighty-four thousand, six hundred fifty-four".