12681065 has 16 divisors (see below), whose sum is σ = 16216848. Its totient is φ = 9486336.

The previous prime is 12681059. The next prime is 12681079. The reversal of 12681065 is 56018621.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1283689 + 11397376 = 1133^2 + 3376^2 .

It is not a de Polignac number, because 12681065 - 2¹⁴ = 12664681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16019 + ... + 16791.

It is an arithmetic number, because the mean of its divisors is an integer number (1013553).

Almost surely, 2^12681065 is an apocalyptic number.

It is an amenable number.

12681065 is a deficient number, since it is larger than the sum of its proper divisors (3535783).

12681065 is a wasteful number, since it uses less digits than its factorization.

12681065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988.

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

The square root of 12681065 is about 3561.0483007115. The cubic root of 12681065 is about 233.1946466098.

Adding to 12681065 its reverse (56018621), we get a palindrome (68699686).

The spelling of 12681065 in words is "twelve million, six hundred eighty-one thousand, sixty-five".