11665992 has 64 divisors (see below), whose sum is σ = 31752000. Its totient is φ = 3550464.

The previous prime is 11665963. The next prime is 11666021. The reversal of 11665992 is 29956611.

It is an interprime number because it is at equal distance from previous prime (11665963) and next prime (11666021).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 11665992.

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 in 15 ways as a sum of consecutive naturals, for example, 43234 + ... + 43502.

It is an arithmetic number, because the mean of its divisors is an integer number (496125).

Almost surely, 2^11665992 is an apocalyptic number.

11665992 is a gapful number since it is divisible by the number (12) 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 11665992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15876000).

11665992 is an abundant number, since it is smaller than the sum of its proper divisors (20086008).

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

11665992 is a wasteful number, since it uses less digits than its factorization.

11665992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 426 counting only the distinct ones).

The product of its digits is 29160, while the sum is 39.

The square root of 11665992 is about 3415.5514928046. The cubic root of 11665992 is about 226.7986985483.

The spelling of 11665992 in words is "eleven million, six hundred sixty-five thousand, nine hundred ninety-two".