12966481 has 12 divisors (see below), whose sum is σ = 14407092. Its totient is φ = 11660000.

The previous prime is 12966469. The next prime is 12966491. The reversal of 12966481 is 18466921.

It is a happy number.

12966481 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 2 ways, for example, as 10890000 + 2076481 = 3300^2 + 1441^2 .

It is not a de Polignac number, because 12966481 - 2⁵ = 12966449 is a prime.

It is a super-2 number, since 2×12966481² = 336259259046722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12966481.

It is not an unprimeable number, because it can be changed into a prime (12966431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11691 + ... + 12751.

It is an arithmetic number, because the mean of its divisors is an integer number (1200591).

Almost surely, 2^12966481 is an apocalyptic number.

12966481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12966481 is a deficient number, since it is larger than the sum of its proper divisors (1440611).

12966481 is a wasteful number, since it uses less digits than its factorization.

12966481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184 (or 1173 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 12966481 is about 3600.9000263823. The cubic root of 12966481 is about 234.9312066630.

It can be divided in two parts, 1296 and 6481, that added together give a palindrome (7777).

The spelling of 12966481 in words is "twelve million, nine hundred sixty-six thousand, four hundred eighty-one".