11506487 has 4 divisors (see below), whose sum is σ = 11877696. Its totient is φ = 11135280.

The previous prime is 11506477. The next prime is 11506489. The reversal of 11506487 is 78460511.

It is a happy number.

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 11506487 - 2⁴ = 11506471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11506489) 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, 185558 + ... + 185619.

It is an arithmetic number, because the mean of its divisors is an integer number (2969424).

Almost surely, 2^11506487 is an apocalyptic number.

11506487 is a deficient number, since it is larger than the sum of its proper divisors (371209).

11506487 is an equidigital number, since it uses as much as digits as its factorization.

11506487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371208.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 11506487 is about 3392.1213126892. The cubic root of 11506487 is about 225.7603052984.

Adding to 11506487 its reverse (78460511), we get a palindrome (89966998).

The spelling of 11506487 in words is "eleven million, five hundred six thousand, four hundred eighty-seven".