11721696 has 48 divisors (see below), whose sum is σ = 35167104. Its totient is φ = 3348864.

The previous prime is 11721691. The next prime is 11721733. The reversal of 11721696 is 69612711.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11721691) 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 7 ways as a sum of consecutive naturals, for example, 8050 + ... + 9393.

It is an arithmetic number, because the mean of its divisors is an integer number (732648).

Almost surely, 2^11721696 is an apocalyptic number.

11721696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11721696 is an abundant number, since it is smaller than the sum of its proper divisors (23445408).

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

11721696 is a wasteful number, since it uses less digits than its factorization.

11721696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17463 (or 17455 counting only the distinct ones).

The product of its digits is 4536, while the sum is 33.

The square root of 11721696 is about 3423.6962482089. The cubic root of 11721696 is about 227.1591062418.

The spelling of 11721696 in words is "eleven million, seven hundred twenty-one thousand, six hundred ninety-six".