11387664 has 60 divisors (see below), whose sum is σ = 32910592. Its totient is φ = 3672000.

The previous prime is 11387617. The next prime is 11387687. The reversal of 11387664 is 46678311.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3189 + ... + 5739.

Almost surely, 2^11387664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11387664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16455296).

11387664 is an abundant number, since it is smaller than the sum of its proper divisors (21522928).

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

11387664 is a wasteful number, since it uses less digits than its factorization.

11387664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596 (or 2587 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 11387664 is about 3374.5613048217. The cubic root of 11387664 is about 224.9805020141.

The spelling of 11387664 in words is "eleven million, three hundred eighty-seven thousand, six hundred sixty-four".