12662145 has 12 divisors (see below), whose sum is σ = 21947796. Its totient is φ = 6753120.

The previous prime is 12662131. The next prime is 12662149. The reversal of 12662145 is 54126621.

It can be written as a sum of positive squares in 2 ways, for example, as 2852721 + 9809424 = 1689^2 + 3132^2 .

It is not a de Polignac number, because 12662145 - 2⁷ = 12662017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12662149) 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, 140646 + ... + 140735.

It is an arithmetic number, because the mean of its divisors is an integer number (1828983).

Almost surely, 2^12662145 is an apocalyptic number.

12662145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12662145 is a deficient number, since it is larger than the sum of its proper divisors (9285651).

12662145 is a wasteful number, since it uses less digits than its factorization.

12662145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281392 (or 281389 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12662145 is about 3558.3907879827. The cubic root of 12662145 is about 233.0786143267.

Adding to 12662145 its reverse (54126621), we get a palindrome (66788766).

The spelling of 12662145 in words is "twelve million, six hundred sixty-two thousand, one hundred forty-five".