12805634 has 4 divisors (see below), whose sum is σ = 19208454. Its totient is φ = 6402816.

The previous prime is 12805627. The next prime is 12805673. The reversal of 12805634 is 43650821.

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

It can be written as a sum of positive squares in only one way, i.e., 9394225 + 3411409 = 3065^2 + 1847^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12805597 and 12805606.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201407 + ... + 3201410.

Almost surely, 2^12805634 is an apocalyptic number.

12805634 is a deficient number, since it is larger than the sum of its proper divisors (6402820).

12805634 is an equidigital number, since it uses as much as digits as its factorization.

12805634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402819.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 12805634 is about 3578.4960528132. The cubic root of 12805634 is about 233.9557346810.

The spelling of 12805634 in words is "twelve million, eight hundred five thousand, six hundred thirty-four".