11187897 has 8 divisors (see below), whose sum is σ = 17048256. Its totient is φ = 6393072.

The previous prime is 11187877. The next prime is 11187899. The reversal of 11187897 is 79878111.

It is a happy number.

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

It is not a de Polignac number, because 11187897 - 2⁷ = 11187769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11187899) 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, 266358 + ... + 266399.

It is an arithmetic number, because the mean of its divisors is an integer number (2131032).

Almost surely, 2^11187897 is an apocalyptic number.

It is an amenable number.

11187897 is a deficient number, since it is larger than the sum of its proper divisors (5860359).

11187897 is an equidigital number, since it uses as much as digits as its factorization.

11187897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532767.

The product of its digits is 28224, while the sum is 42.

The square root of 11187897 is about 3344.8313858848. The cubic root of 11187897 is about 223.6571671530.

The spelling of 11187897 in words is "eleven million, one hundred eighty-seven thousand, eight hundred ninety-seven".