12761305 has 32 divisors (see below), whose sum is σ = 17418240. Its totient is φ = 8924160.

The previous prime is 12761267. The next prime is 12761311. The reversal of 12761305 is 50316721.

12761305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12761305 - 2¹³ = 12753113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12761305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76332 + ... + 76498.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^12761305 is an apocalyptic number.

It is an amenable number.

12761305 is a deficient number, since it is larger than the sum of its proper divisors (4656935).

12761305 is a wasteful number, since it uses less digits than its factorization.

12761305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12761305 is about 3572.2968801599. The cubic root of 12761305 is about 233.6854626563.

The spelling of 12761305 in words is "twelve million, seven hundred sixty-one thousand, three hundred five".