1113613 has 4 divisors (see below), whose sum is σ = 1149568. Its totient is φ = 1077660.

The previous prime is 1113599. The next prime is 1113617. The reversal of 1113613 is 3163111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3163111 = 7 ⋅451873.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1113613 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 (1113617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17931 + ... + 17992.

It is an arithmetic number, because the mean of its divisors is an integer number (287392).

2^1113613 is an apocalyptic number.

It is an amenable number.

1113613 is a deficient number, since it is larger than the sum of its proper divisors (35955).

1113613 is an equidigital number, since it uses as much as digits as its factorization.

1113613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35954.

The product of its digits is 54, while the sum is 16.

The square root of 1113613 is about 1055.2786361905. The cubic root of 1113613 is about 103.6520980941.

Adding to 1113613 its reverse (3163111), we get a palindrome (4276724).

The spelling of 1113613 in words is "one million, one hundred thirteen thousand, six hundred thirteen".