11817197 has 8 divisors (see below), whose sum is σ = 13576896. Its totient is φ = 10075392.

The previous prime is 11817191. The next prime is 11817199. The reversal of 11817197 is 79171811.

11817197 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11817197 - 2⁶ = 11817133 is a prime.

It is a super-2 number, since 2×11817197² = 279292289873618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11817191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3023 + ... + 5724.

It is an arithmetic number, because the mean of its divisors is an integer number (1697112).

Almost surely, 2^11817197 is an apocalyptic number.

It is an amenable number.

11817197 is a deficient number, since it is larger than the sum of its proper divisors (1759699).

11817197 is an equidigital number, since it uses as much as digits as its factorization.

11817197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8947.

The product of its digits is 3528, while the sum is 35.

The square root of 11817197 is about 3437.6150162576. The cubic root of 11817197 is about 227.7743548343.

The spelling of 11817197 in words is "eleven million, eight hundred seventeen thousand, one hundred ninety-seven".