12660099 has 8 divisors (see below), whose sum is σ = 17768640. Its totient is φ = 7995816.

The previous prime is 12660091. The next prime is 12660101. The reversal of 12660099 is 99006621.

It is a happy number.

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

It is not a de Polignac number, because 12660099 - 2³ = 12660091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12660091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110997 + ... + 111110.

It is an arithmetic number, because the mean of its divisors is an integer number (2221080).

Almost surely, 2^12660099 is an apocalyptic number.

12660099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12660099 is a deficient number, since it is larger than the sum of its proper divisors (5108541).

12660099 is a wasteful number, since it uses less digits than its factorization.

12660099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222129.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 12660099 is about 3558.1032868651. The cubic root of 12660099 is about 233.0660597258.

The spelling of 12660099 in words is "twelve million, six hundred sixty thousand, ninety-nine".