1100664 has 24 divisors (see below), whose sum is σ = 2981160. Its totient is φ = 366864.

The previous prime is 1100653. The next prime is 1100681. The reversal of 1100664 is 4660011.

1100664 is a `hidden beast` number, since 1 + 1 + 0 + 0 + 664 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1100664² = 2422922481792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7572 + ... + 7715.

It is an arithmetic number, because the mean of its divisors is an integer number (124215).

2^1100664 is an apocalyptic number.

It is an amenable number.

1100664 is an abundant number, since it is smaller than the sum of its proper divisors (1880496).

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

1100664 is a wasteful number, since it uses less digits than its factorization.

1100664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15299 (or 15292 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1100664 is about 1049.1253499940. The cubic root of 1100664 is about 103.2487780949.

Adding to 1100664 its reverse (4660011), we get a palindrome (5760675).

It can be divided in two parts, 1100 and 664, that added together give a square (1764 = 42²).

The spelling of 1100664 in words is "one million, one hundred thousand, six hundred sixty-four".