91677 has 4 divisors (see below), whose sum is σ = 122240. Its totient is φ = 61116.

The previous prime is 91673. The next prime is 91691. The reversal of 91677 is 77619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77619 = 3 ⋅25873.

It is not a de Polignac number, because 91677 - 2² = 91673 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91677.

It is not an unprimeable number, because it can be changed into a prime (91673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15277 + ... + 15282.

It is an arithmetic number, because the mean of its divisors is an integer number (30560).

2⁹¹⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

91677 is a deficient number, since it is larger than the sum of its proper divisors (30563).

91677 is a wasteful number, since it uses less digits than its factorization.

91677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30562.

The product of its digits is 2646, while the sum is 30.

The square root of 91677 is about 302.7820998672. The cubic root of 91677 is about 45.0906813391.

The spelling of 91677 in words is "ninety-one thousand, six hundred seventy-seven".