12645316 has 6 divisors (see below), whose sum is σ = 22129310. Its totient is φ = 6322656.

The previous prime is 12645287. The next prime is 12645319. The reversal of 12645316 is 61354621.

It can be written as a sum of positive squares in only one way, i.e., 12630916 + 14400 = 3554^2 + 120^2 .

It is not an unprimeable number, because it can be changed into a prime (12645319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580661 + ... + 1580668.

Almost surely, 2^12645316 is an apocalyptic number.

It is an amenable number.

12645316 is a deficient number, since it is larger than the sum of its proper divisors (9483994).

12645316 is a wasteful number, since it uses less digits than its factorization.

12645316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161333 (or 3161331 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 12645316 is about 3556.0253092463. The cubic root of 12645316 is about 232.9753085269.

Adding to 12645316 its reverse (61354621), we get a palindrome (73999937).

The spelling of 12645316 in words is "twelve million, six hundred forty-five thousand, three hundred sixteen".