1113487 has 4 divisors (see below), whose sum is σ = 1115856. Its totient is φ = 1111120.

The previous prime is 1113481. The next prime is 1113491. The reversal of 1113487 is 7843111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113487 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 (1113481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (278964).

2^1113487 is an apocalyptic number.

1113487 is a deficient number, since it is larger than the sum of its proper divisors (2369).

1113487 is an equidigital number, since it uses as much as digits as its factorization.

1113487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its digits is 672, while the sum is 25.

The square root of 1113487 is about 1055.2189346292. The cubic root of 1113487 is about 103.6481886998.

Adding to 1113487 its reverse (7843111), we get a palindrome (8956598).

It can be divided in two parts, 1113 and 487, that added together give a square (1600 = 40²).

The spelling of 1113487 in words is "one million, one hundred thirteen thousand, four hundred eighty-seven".