11197656 has 64 divisors (see below), whose sum is σ = 31795200. Its totient is φ = 3649824.

The previous prime is 11197651. The next prime is 11197661. The reversal of 11197656 is 65679111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11197651) and next prime (11197661).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 11197656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197651) 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 15 ways as a sum of consecutive naturals, for example, 9601 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (496800).

Almost surely, 2^11197656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11197656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15897600).

11197656 is an abundant number, since it is smaller than the sum of its proper divisors (20597544).

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

11197656 is a wasteful number, since it uses less digits than its factorization.

11197656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1155 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 11197656 is about 3346.2898858288. The cubic root of 11197656 is about 223.7221789530.

The spelling of 11197656 in words is "eleven million, one hundred ninety-seven thousand, six hundred fifty-six".