12611789 has 2 divisors, whose sum is σ = 12611790. Its totient is φ = 12611788.

The previous prime is 12611777. The next prime is 12611821. The reversal of 12611789 is 98711621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 1085764 = 3395^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 12611789 - 2¹⁶ = 12546253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12611749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6305894 + 6305895.

It is an arithmetic number, because the mean of its divisors is an integer number (6305895).

Almost surely, 2^12611789 is an apocalyptic number.

It is an amenable number.

12611789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12611789 is an equidigital number, since it uses as much as digits as its factorization.

12611789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 35.

The square root of 12611789 is about 3551.3080688670. The cubic root of 12611789 is about 232.7692275685.

The spelling of 12611789 in words is "twelve million, six hundred eleven thousand, seven hundred eighty-nine".