3693 has 4 divisors (see below), whose sum is σ = 4928. Its totient is φ = 2460.

The previous prime is 3691. The next prime is 3697. The reversal of 3693 is 3963.

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: 3963 = 3 ⋅1321.

It is not a de Polignac number, because 3693 - 2¹ = 3691 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691) 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, 613 + ... + 618.

It is an arithmetic number, because the mean of its divisors is an integer number (1232).

2³⁶⁹³ is an apocalyptic number.

It is an amenable number.

3693 is a deficient number, since it is larger than the sum of its proper divisors (1235).

3693 is a wasteful number, since it uses less digits than its factorization.

3693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234.

The product of its digits is 486, while the sum is 21.

The square root of 3693 is about 60.7700584170. The cubic root of 3693 is about 15.4570437400.

It can be divided in two parts, 3 and 693, that added together give a palindrome (696).

The spelling of 3693 in words is "three thousand, six hundred ninety-three".