12611816 has 24 divisors (see below), whose sum is σ = 27508770. Its totient is φ = 5404896.

The previous prime is 12611789. The next prime is 12611821. The reversal of 12611816 is 61811621.

It can be written as a sum of positive squares in only one way, i.e., 11195716 + 1416100 = 3346^2 + 1190^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15695 + ... + 16478.

Almost surely, 2^12611816 is an apocalyptic number.

It is an amenable number.

12611816 is an abundant number, since it is smaller than the sum of its proper divisors (14896954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12611816 is a wasteful number, since it uses less digits than its factorization.

12611816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32193 (or 32182 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 12611816 is about 3551.3118702812. The cubic root of 12611816 is about 232.7693936767.

The spelling of 12611816 in words is "twelve million, six hundred eleven thousand, eight hundred sixteen".