11647697 has 4 divisors (see below), whose sum is σ = 11778660. Its totient is φ = 11516736.

The previous prime is 11647679. The next prime is 11647717. The reversal of 11647697 is 79674611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79674611 = 293 ⋅271927.

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 10784656 = 929^2 + 3284^2 .

It is a cyclic number.

It is not a de Polignac number, because 11647697 - 2⁶ = 11647633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11647607) 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, 65348 + ... + 65525.

It is an arithmetic number, because the mean of its divisors is an integer number (2944665).

Almost surely, 2^11647697 is an apocalyptic number.

It is an amenable number.

11647697 is a deficient number, since it is larger than the sum of its proper divisors (130963).

11647697 is an equidigital number, since it uses as much as digits as its factorization.

11647697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130962.

The product of its digits is 63504, while the sum is 41.

The square root of 11647697 is about 3412.8722507589. The cubic root of 11647697 is about 226.6800787431.

The spelling of 11647697 in words is "eleven million, six hundred forty-seven thousand, six hundred ninety-seven".