11997608 has 16 divisors (see below), whose sum is σ = 25709280. Its totient is φ = 5141808.

The previous prime is 11997599. The next prime is 11997611. The reversal of 11997608 is 80679911.

It is a happy number.

It is a super-3 number, since 3×11997608³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107066 + ... + 107177.

It is an arithmetic number, because the mean of its divisors is an integer number (1606830).

Almost surely, 2^11997608 is an apocalyptic number.

It is an amenable number.

11997608 is an abundant number, since it is smaller than the sum of its proper divisors (13711672).

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

11997608 is a wasteful number, since it uses less digits than its factorization.

11997608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214256 (or 214252 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 11997608 is about 3463.7563424698. The cubic root of 11997608 is about 228.9276355194.

The spelling of 11997608 in words is "eleven million, nine hundred ninety-seven thousand, six hundred eight".