11646197 has 4 divisors (see below), whose sum is σ = 12047820. Its totient is φ = 11244576.

The previous prime is 11646191. The next prime is 11646203. The reversal of 11646197 is 79164611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79164611 = 2111 ⋅37501.

It is an interprime number because it is at equal distance from previous prime (11646191) and next prime (11646203).

It can be written as a sum of positive squares in 2 ways, for example, as 8708401 + 2937796 = 2951^2 + 1714^2 .

It is not a de Polignac number, because 11646197 - 2⁶ = 11646133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11646191) 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, 200768 + ... + 200825.

It is an arithmetic number, because the mean of its divisors is an integer number (3011955).

Almost surely, 2^11646197 is an apocalyptic number.

It is an amenable number.

11646197 is a deficient number, since it is larger than the sum of its proper divisors (401623).

11646197 is an equidigital number, since it uses as much as digits as its factorization.

11646197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401622.

The product of its digits is 9072, while the sum is 35.

The square root of 11646197 is about 3412.6524874355. The cubic root of 11646197 is about 226.6703476430.

The spelling of 11646197 in words is "eleven million, six hundred forty-six thousand, one hundred ninety-seven".