11990664 has 96 divisors (see below), whose sum is σ = 38176320. Its totient is φ = 3328128.

The previous prime is 11990639. The next prime is 11990677. The reversal of 11990664 is 46609911.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18327 + ... + 18969.

It is an arithmetic number, because the mean of its divisors is an integer number (397670).

Almost surely, 2^11990664 is an apocalyptic number.

11990664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11990664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19088160).

11990664 is an abundant number, since it is smaller than the sum of its proper divisors (26185656).

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

11990664 is a wasteful number, since it uses less digits than its factorization.

11990664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 11990664 is about 3462.7538174118. The cubic root of 11990664 is about 228.8834605947.

The spelling of 11990664 in words is "eleven million, nine hundred ninety thousand, six hundred sixty-four".