93691 has 4 divisors (see below), whose sum is σ = 100912. Its totient is φ = 86472.

The previous prime is 93683. The next prime is 93701. The reversal of 93691 is 19639.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19639 = 41 ⋅479.

It is a cyclic number.

It is not a de Polignac number, because 93691 - 2³ = 93683 is a prime.

It is a Duffinian number.

93691 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (93601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3591 + ... + 3616.

It is an arithmetic number, because the mean of its divisors is an integer number (25228).

2⁹³⁶⁹¹ is an apocalyptic number.

93691 is a deficient number, since it is larger than the sum of its proper divisors (7221).

93691 is a wasteful number, since it uses less digits than its factorization.

93691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7220.

The product of its digits is 1458, while the sum is 28.

The square root of 93691 is about 306.0898560880. The cubic root of 93691 is about 45.4184830330.

It can be divided in two parts, 93 and 691, that added together give a square (784 = 28²).

The spelling of 93691 in words is "ninety-three thousand, six hundred ninety-one".