12678261 has 16 divisors (see below), whose sum is σ = 17236800. Its totient is φ = 8288000.

The previous prime is 12678251. The next prime is 12678269. The reversal of 12678261 is 16287621.

12678261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12678261 - 2¹³ = 12670069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12678269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50386 + ... + 50636.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^12678261 is an apocalyptic number.

It is an amenable number.

12678261 is a deficient number, since it is larger than the sum of its proper divisors (4558539).

12678261 is a wasteful number, since it uses less digits than its factorization.

12678261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516.

The product of its digits is 8064, while the sum is 33.

The square root of 12678261 is about 3560.6545746534. The cubic root of 12678261 is about 233.1774575701.

It can be divided in two parts, 126 and 78261, that added together give a palindrome (78387).

The spelling of 12678261 in words is "twelve million, six hundred seventy-eight thousand, two hundred sixty-one".