1113663 has 16 divisors (see below), whose sum is σ = 1556480. Its totient is φ = 707616.

The previous prime is 1113643. The next prime is 1113667. The reversal of 1113663 is 3663111.

It is not a de Polignac number, because 1113663 - 2⁶ = 1113599 is a prime.

It is a Duffinian number.

1113663 is a modest number, since divided by 3663 gives 111 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8706 + ... + 8832.

It is an arithmetic number, because the mean of its divisors is an integer number (97280).

2^1113663 is an apocalyptic number.

1113663 is a deficient number, since it is larger than the sum of its proper divisors (442817).

1113663 is a wasteful number, since it uses less digits than its factorization.

1113663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246.

The product of its digits is 324, while the sum is 21.

The square root of 1113663 is about 1055.3023263501. The cubic root of 1113663 is about 103.6536493594.

Adding to 1113663 its reverse (3663111), we get a palindrome (4776774).

The spelling of 1113663 in words is "one million, one hundred thirteen thousand, six hundred sixty-three".