1113647 has 4 divisors (see below), whose sum is σ = 1172280. Its totient is φ = 1055016.

The previous prime is 1113643. The next prime is 1113667. The reversal of 1113647 is 7463111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7463111 = 83 ⋅89917.

It is a cyclic number.

It is not a de Polignac number, because 1113647 - 2² = 1113643 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 (1113643) 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, 29288 + ... + 29325.

It is an arithmetic number, because the mean of its divisors is an integer number (293070).

2^1113647 is an apocalyptic number.

1113647 is a deficient number, since it is larger than the sum of its proper divisors (58633).

1113647 is an equidigital number, since it uses as much as digits as its factorization.

1113647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58632.

The product of its digits is 504, while the sum is 23.

The square root of 1113647 is about 1055.2947455569. The cubic root of 1113647 is about 103.6531529595.

Adding to 1113647 its reverse (7463111), we get a palindrome (8576758).

The spelling of 1113647 in words is "one million, one hundred thirteen thousand, six hundred forty-seven".