12645404 has 6 divisors (see below), whose sum is σ = 22129464. Its totient is φ = 6322700.

The previous prime is 12645403. The next prime is 12645419. The reversal of 12645404 is 40454621.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580672 + ... + 1580679.

It is an arithmetic number, because the mean of its divisors is an integer number (3688244).

Almost surely, 2^12645404 is an apocalyptic number.

It is an amenable number.

12645404 is a deficient number, since it is larger than the sum of its proper divisors (9484060).

12645404 is a wasteful number, since it uses less digits than its factorization.

12645404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161355 (or 3161353 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 12645404 is about 3556.0376825900. The cubic root of 12645404 is about 232.9758489584.

The spelling of 12645404 in words is "twelve million, six hundred forty-five thousand, four hundred four".