12756513 has 48 divisors (see below), whose sum is σ = 22588416. Its totient is φ = 6338640.

The previous prime is 12756487. The next prime is 12756521. The reversal of 12756513 is 31565721.

It is not a de Polignac number, because 12756513 - 2¹⁰ = 12755489 is a prime.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (12756013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 554620 + ... + 554642.

It is an arithmetic number, because the mean of its divisors is an integer number (470592).

Almost surely, 2^12756513 is an apocalyptic number.

It is an amenable number.

12756513 is a deficient number, since it is larger than the sum of its proper divisors (9831903).

12756513 is an frugal number, since it uses more digits than its factorization.

12756513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 44 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 12756513 is about 3571.6261002518. The cubic root of 12756513 is about 233.6562085705.

The spelling of 12756513 in words is "twelve million, seven hundred fifty-six thousand, five hundred thirteen".