11289664 has 14 divisors (see below), whose sum is σ = 22403054. Its totient is φ = 5644800.

The previous prime is 11289659. The next prime is 11289721. The reversal of 11289664 is 46698211.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11289600 + 64 = 3360^2 + 8^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88137 + ... + 88264.

Almost surely, 2^11289664 is an apocalyptic number.

It is an amenable number.

11289664 is a deficient number, since it is larger than the sum of its proper divisors (11113390).

11289664 is an equidigital number, since it uses as much as digits as its factorization.

11289664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176413 (or 176403 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 11289664 is about 3360.0095237960. The cubic root of 11289664 is about 224.3332624367. Note that the first 3 decimals are identical.

It can be divided in two parts, 112896 and 64, that multiplied together give a square (7225344 = 2688²).

The spelling of 11289664 in words is "eleven million, two hundred eighty-nine thousand, six hundred sixty-four".