11143664 has 20 divisors (see below), whose sum is σ = 24675504. Its totient is φ = 4775808.

The previous prime is 11143631. The next prime is 11143667. The reversal of 11143664 is 46634111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11143667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49637 + ... + 49860.

Almost surely, 2^11143664 is an apocalyptic number.

11143664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11143664 is an abundant number, since it is smaller than the sum of its proper divisors (13531840).

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

11143664 is an equidigital number, since it uses as much as digits as its factorization.

11143664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99512 (or 99506 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 11143664 is about 3338.2126954405. The cubic root of 11143664 is about 223.3620239867.

Adding to 11143664 its reverse (46634111), we get a palindrome (57777775).

The spelling of 11143664 in words is "eleven million, one hundred forty-three thousand, six hundred sixty-four".