1103664 has 20 divisors (see below), whose sum is σ = 2851256. Its totient is φ = 367872.

The previous prime is 1103639. The next prime is 1103699. The reversal of 1103664 is 4663011.

It is a self number, because there is not a number n which added to its sum of digits gives 1103664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11449 + ... + 11544.

2^1103664 is an apocalyptic number.

It is an amenable number.

1103664 is an abundant number, since it is smaller than the sum of its proper divisors (1747592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1103664 is a wasteful number, since it uses less digits than its factorization.

1103664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23004 (or 22998 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1103664 is about 1050.5541394902. The cubic root of 1103664 is about 103.3424988979.

Adding to 1103664 its reverse (4663011), we get a palindrome (5766675).

The spelling of 1103664 in words is "one million, one hundred three thousand, six hundred sixty-four".