12618799 has 4 divisors (see below), whose sum is σ = 13053960. Its totient is φ = 12183640.

The previous prime is 12618787. The next prime is 12618803. The reversal of 12618799 is 99781621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99781621 = 137 ⋅728333.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12618799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12618769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217537 + ... + 217594.

It is an arithmetic number, because the mean of its divisors is an integer number (3263490).

Almost surely, 2^12618799 is an apocalyptic number.

12618799 is a deficient number, since it is larger than the sum of its proper divisors (435161).

12618799 is an equidigital number, since it uses as much as digits as its factorization.

12618799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435160.

The product of its digits is 54432, while the sum is 43.

The square root of 12618799 is about 3552.2948920381. The cubic root of 12618799 is about 232.8123462215.

The spelling of 12618799 in words is "twelve million, six hundred eighteen thousand, seven hundred ninety-nine".