12660434 has 4 divisors (see below), whose sum is σ = 18990654. Its totient is φ = 6330216.

The previous prime is 12660421. The next prime is 12660457. The reversal of 12660434 is 43406621.

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., 8720209 + 3940225 = 2953^2 + 1985^2 .

It is an unprimeable number.

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, 3165107 + ... + 3165110.

Almost surely, 2^12660434 is an apocalyptic number.

12660434 is a deficient number, since it is larger than the sum of its proper divisors (6330220).

12660434 is an equidigital number, since it uses as much as digits as its factorization.

12660434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6330219.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 12660434 is about 3558.1503621966. The cubic root of 12660434 is about 233.0681154348.

The spelling of 12660434 in words is "twelve million, six hundred sixty thousand, four hundred thirty-four".