11609487 has 20 divisors (see below), whose sum is σ = 18364896. Its totient is φ = 7283520.

The previous prime is 11609473. The next prime is 11609497. The reversal of 11609487 is 78490611.

11609487 is a `hidden beast` number, since 1 + 1 + 609 + 48 + 7 = 666.

11609487 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11609487 - 2⁷ = 11609359 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11609417) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2839 + ... + 5592.

Almost surely, 2^11609487 is an apocalyptic number.

11609487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11609487 is a deficient number, since it is larger than the sum of its proper divisors (6755409).

11609487 is an equidigital number, since it uses as much as digits as its factorization.

11609487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460 (or 8451 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 11609487 is about 3407.2697280961. The cubic root of 11609487 is about 226.4319342864.

The spelling of 11609487 in words is "eleven million, six hundred nine thousand, four hundred eighty-seven".