12611869 has 2 divisors, whose sum is σ = 12611870. Its totient is φ = 12611868.

The previous prime is 12611849. The next prime is 12611891. The reversal of 12611869 is 96811621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8631844 + 3980025 = 2938^2 + 1995^2 .

It is a cyclic number.

It is not a de Polignac number, because 12611869 - 2¹⁵ = 12579101 is a prime.

It is a super-2 number, since 2×12611869² = 318118479346322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12611849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305934 + 6305935.

It is an arithmetic number, because the mean of its divisors is an integer number (6305935).

Almost surely, 2^12611869 is an apocalyptic number.

It is an amenable number.

12611869 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611869 is an equidigital number, since it uses as much as digits as its factorization.

12611869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 12611869 is about 3551.3193323045. The cubic root of 12611869 is about 232.7697197403.

The spelling of 12611869 in words is "twelve million, six hundred eleven thousand, eight hundred sixty-nine".