11831664 has 80 divisors (see below), whose sum is σ = 33525632. Its totient is φ = 3573504.

The previous prime is 11831663. The next prime is 11831669. The reversal of 11831664 is 46613811.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11831663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41667 + ... + 41949.

Almost surely, 2^11831664 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 11831664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16762816).

11831664 is an abundant number, since it is smaller than the sum of its proper divisors (21693968).

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

11831664 is a wasteful number, since it uses less digits than its factorization.

11831664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 368 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 11831664 is about 3439.7185931410. The cubic root of 11831664 is about 227.8672665404.

The spelling of 11831664 in words is "eleven million, eight hundred thirty-one thousand, six hundred sixty-four".