12645398 has 4 divisors (see below), whose sum is σ = 18968100. Its totient is φ = 6322698.

The previous prime is 12645389. The next prime is 12645401. The reversal of 12645398 is 89354621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3161348 + ... + 3161351.

It is an arithmetic number, because the mean of its divisors is an integer number (4742025).

Almost surely, 2^12645398 is an apocalyptic number.

12645398 is a deficient number, since it is larger than the sum of its proper divisors (6322702).

12645398 is an equidigital number, since it uses as much as digits as its factorization.

12645398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6322701.

The product of its digits is 51840, while the sum is 38.

The square root of 12645398 is about 3556.0368389543. The cubic root of 12645398 is about 232.9758121109.

The spelling of 12645398 in words is "twelve million, six hundred forty-five thousand, three hundred ninety-eight".