12856061 has 4 divisors (see below), whose sum is σ = 12889500. Its totient is φ = 12822624.

The previous prime is 12856037. The next prime is 12856069. The reversal of 12856061 is 16065821.

It is a happy number.

12856061 is digitally balanced in base 3, 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 an emirpimes, since its reverse is a distinct semiprime: 16065821 = 1453 ⋅11057.

It can be written as a sum of positive squares in 2 ways, for example, as 988036 + 11868025 = 994^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 12856061 - 2¹⁴ = 12839677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16136 + ... + 16913.

It is an arithmetic number, because the mean of its divisors is an integer number (3222375).

Almost surely, 2^12856061 is an apocalyptic number.

12856061 is the 1604-th centered decagonal number.

It is an amenable number.

12856061 is a deficient number, since it is larger than the sum of its proper divisors (33439).

12856061 is an equidigital number, since it uses as much as digits as its factorization.

12856061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33438.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12856061 is about 3585.5349670586. The cubic root of 12856061 is about 234.2624286898.

The spelling of 12856061 in words is "twelve million, eight hundred fifty-six thousand, sixty-one".