12005998 has 8 divisors (see below), whose sum is σ = 18277992. Its totient is φ = 5913336.

The previous prime is 12005963. The next prime is 12006017. The reversal of 12005998 is 89950021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44665 + ... + 44932.

It is an arithmetic number, because the mean of its divisors is an integer number (2284749).

Almost surely, 2^12005998 is an apocalyptic number.

12005998 is a deficient number, since it is larger than the sum of its proper divisors (6271994).

12005998 is an equidigital number, since it uses as much as digits as its factorization.

12005998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89666.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 12005998 is about 3464.9672437124. The cubic root of 12005998 is about 228.9809865795.

The spelling of 12005998 in words is "twelve million, five thousand, nine hundred ninety-eight".