91774 has 4 divisors (see below), whose sum is σ = 137664. Its totient is φ = 45886.

The previous prime is 91771. The next prime is 91781. The reversal of 91774 is 47719.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22942 + ... + 22945.

It is an arithmetic number, because the mean of its divisors is an integer number (34416).

2⁹¹⁷⁷⁴ is an apocalyptic number.

91774 is a deficient number, since it is larger than the sum of its proper divisors (45890).

91774 is a wasteful number, since it uses less digits than its factorization.

91774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45889.

The product of its digits is 1764, while the sum is 28.

The square root of 91774 is about 302.9422387189. The cubic root of 91774 is about 45.1065786540.

The spelling of 91774 in words is "ninety-one thousand, seven hundred seventy-four".