11155664 has 20 divisors (see below), whose sum is σ = 23277156. Its totient is φ = 5148672.

The previous prime is 11155663. The next prime is 11155673. The reversal of 11155664 is 46655111.

11155664 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 1669264 + 9486400 = 1292^2 + 3080^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11155663) 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, 26609 + ... + 27024.

Almost surely, 2^11155664 is an apocalyptic number.

It is an amenable number.

11155664 is an abundant number, since it is smaller than the sum of its proper divisors (12121492).

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

11155664 is a wasteful number, since it uses less digits than its factorization.

11155664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53654 (or 53648 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 11155664 is about 3340.0095808246. The cubic root of 11155664 is about 223.4421706589.

It can be divided in two parts, 111556 and 64, that multiplied together give a square (7139584 = 2672²).

The spelling of 11155664 in words is "eleven million, one hundred fifty-five thousand, six hundred sixty-four".