11996558 has 8 divisors (see below), whose sum is σ = 20565552. Its totient is φ = 5141376.

The previous prime is 11996557. The next prime is 11996573. The reversal of 11996558 is 85569911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11996557) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 428435 + ... + 428462.

It is an arithmetic number, because the mean of its divisors is an integer number (2570694).

Almost surely, 2^11996558 is an apocalyptic number.

11996558 is a deficient number, since it is larger than the sum of its proper divisors (8568994).

11996558 is an equidigital number, since it uses as much as digits as its factorization.

11996558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856906.

The product of its digits is 97200, while the sum is 44.

The square root of 11996558 is about 3463.6047696006. The cubic root of 11996558 is about 228.9209569373.

The spelling of 11996558 in words is "eleven million, nine hundred ninety-six thousand, five hundred fifty-eight".