12968537 has 6 divisors (see below), whose sum is σ = 13329918. Its totient is φ = 12616704.

The previous prime is 12968533. The next prime is 12968551. The reversal of 12968537 is 73586921.

12968537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 10883401 + 2085136 = 3299^2 + 1444^2 .

It is not a de Polignac number, because 12968537 - 2² = 12968533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12968494 and 12968503.

It is not an unprimeable number, because it can be changed into a prime (12968531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3368 + ... + 6105.

It is an arithmetic number, because the mean of its divisors is an integer number (2221653).

Almost surely, 2^12968537 is an apocalyptic number.

It is an amenable number.

12968537 is a deficient number, since it is larger than the sum of its proper divisors (361381).

12968537 is an frugal number, since it uses more digits than its factorization.

12968537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9547 (or 9510 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 12968537 is about 3601.1854992488. The cubic root of 12968537 is about 234.9436231142.

The spelling of 12968537 in words is "twelve million, nine hundred sixty-eight thousand, five hundred thirty-seven".