12618811 has 4 divisors (see below), whose sum is σ = 13361112. Its totient is φ = 11876512.

The previous prime is 12618803. The next prime is 12618817. The reversal of 12618811 is 11881621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11881621 = 211 ⋅56311.

It is a cyclic number.

It is not a de Polignac number, because 12618811 - 2³ = 12618803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12618811.

It is not an unprimeable number, because it can be changed into a prime (12618817) 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, 371125 + ... + 371158.

It is an arithmetic number, because the mean of its divisors is an integer number (3340278).

Almost surely, 2^12618811 is an apocalyptic number.

12618811 is a deficient number, since it is larger than the sum of its proper divisors (742301).

12618811 is an equidigital number, since it uses as much as digits as its factorization.

12618811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742300.

The product of its digits is 768, while the sum is 28.

The square root of 12618811 is about 3552.2965810867. The cubic root of 12618811 is about 232.8124200201.

The spelling of 12618811 in words is "twelve million, six hundred eighteen thousand, eight hundred eleven".