7704 has 24 divisors (see below), whose sum is σ = 21060. Its totient is φ = 2544.

The previous prime is 7703. The next prime is 7717. The reversal of 7704 is 4077.

Added to its reverse (4077) it gives a triangular number (11781 = T₁₅₃).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 13.

It is a nialpdrome in base 6.

It is a zygodrome in base 2.

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 7704.

It is not an unprimeable number, because it can be changed into a prime (7703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19 + ... + 125.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10530).

7704 is an abundant number, since it is smaller than the sum of its proper divisors (13356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7704 is a wasteful number, since it uses less digits than its factorization.

7704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 7704 is about 87.7724330300. The cubic root of 7704 is about 19.7502269909.

Adding to 7704 its reverse (4077), we get a triangular number (11781 = T₁₅₃).

The spelling of 7704 in words is "seven thousand, seven hundred four", and thus it is an iban number.