11696521 has 4 divisors (see below), whose sum is σ = 11981844. Its totient is φ = 11411200.

The previous prime is 11696479. The next prime is 11696543. The reversal of 11696521 is 12569611.

11696521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 547600 + 11148921 = 740^2 + 3339^2 .

It is a cyclic number.

It is not a de Polignac number, because 11696521 - 2¹⁹ = 11172233 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11696621) 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, 142600 + ... + 142681.

It is an arithmetic number, because the mean of its divisors is an integer number (2995461).

Almost surely, 2^11696521 is an apocalyptic number.

It is an amenable number.

11696521 is a deficient number, since it is larger than the sum of its proper divisors (285323).

11696521 is an equidigital number, since it uses as much as digits as its factorization.

11696521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285322.

The product of its digits is 3240, while the sum is 31.

The square root of 11696521 is about 3420.0176900127. The cubic root of 11696521 is about 226.9963644485.

The spelling of 11696521 in words is "eleven million, six hundred ninety-six thousand, five hundred twenty-one".