12761869 has 4 divisors (see below), whose sum is σ = 12769596. Its totient is φ = 12754144.

The previous prime is 12761867. The next prime is 12761887. The reversal of 12761869 is 96816721.

12761869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6953769 + 5808100 = 2637^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 12761869 - 2¹ = 12761867 is a prime.

It is a super-2 number, since 2×12761869² = 325730600746322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12761867) 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, 274 + ... + 5059.

It is an arithmetic number, because the mean of its divisors is an integer number (3192399).

Almost surely, 2^12761869 is an apocalyptic number.

It is an amenable number.

12761869 is a deficient number, since it is larger than the sum of its proper divisors (7727).

12761869 is an equidigital number, since it uses as much as digits as its factorization.

12761869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7726.

The product of its digits is 36288, while the sum is 40.

The square root of 12761869 is about 3572.3758200951. The cubic root of 12761869 is about 233.6889052682.

The spelling of 12761869 in words is "twelve million, seven hundred sixty-one thousand, eight hundred sixty-nine".