12783674 has 4 divisors (see below), whose sum is σ = 19175514. Its totient is φ = 6391836.

The previous prime is 12783649. The next prime is 12783679. The reversal of 12783674 is 47638721.

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., 10608049 + 2175625 = 3257^2 + 1475^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12783679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3195917 + ... + 3195920.

Almost surely, 2^12783674 is an apocalyptic number.

12783674 is a deficient number, since it is larger than the sum of its proper divisors (6391840).

12783674 is an equidigital number, since it uses as much as digits as its factorization.

12783674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391839.

The product of its digits is 56448, while the sum is 38.

The square root of 12783674 is about 3575.4264081365. The cubic root of 12783674 is about 233.8219235906.

The spelling of 12783674 in words is "twelve million, seven hundred eighty-three thousand, six hundred seventy-four".