12906765 has 24 divisors (see below), whose sum is σ = 22683960. Its totient is φ = 6787584.

The previous prime is 12906731. The next prime is 12906767. The reversal of 12906765 is 56760921.

It can be written as a sum of positive squares in 4 ways, for example, as 311364 + 12595401 = 558^2 + 3549^2 .

It is not a de Polignac number, because 12906765 - 2⁹ = 12906253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12906767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1321 + ... + 5249.

It is an arithmetic number, because the mean of its divisors is an integer number (945165).

Almost surely, 2^12906765 is an apocalyptic number.

12906765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12906765 is a deficient number, since it is larger than the sum of its proper divisors (9777195).

12906765 is a wasteful number, since it uses less digits than its factorization.

12906765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013 (or 4010 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 12906765 is about 3592.5986416520. The cubic root of 12906765 is about 234.5699998486.

The spelling of 12906765 in words is "twelve million, nine hundred six thousand, seven hundred sixty-five".