11475987 has 4 divisors (see below), whose sum is σ = 15301320. Its totient is φ = 7650656.

The previous prime is 11475977. The next prime is 11476001. The reversal of 11475987 is 78957411.

11475987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11475987 - 2¹⁰ = 11474963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11475977) 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, 1912662 + ... + 1912667.

It is an arithmetic number, because the mean of its divisors is an integer number (3825330).

Almost surely, 2^11475987 is an apocalyptic number.

11475987 is a deficient number, since it is larger than the sum of its proper divisors (3825333).

11475987 is an equidigital number, since it uses as much as digits as its factorization.

11475987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825332.

The product of its digits is 70560, while the sum is 42.

The square root of 11475987 is about 3387.6226177070. The cubic root of 11475987 is about 225.5606561149.

The spelling of 11475987 in words is "eleven million, four hundred seventy-five thousand, nine hundred eighty-seven".