12646474 has 4 divisors (see below), whose sum is σ = 18969714. Its totient is φ = 6323236.

The previous prime is 12646471. The next prime is 12646483. The reversal of 12646474 is 47464621.

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., 11730625 + 915849 = 3425^2 + 957^2 .

It is not an unprimeable number, because it can be changed into a prime (12646471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3161617 + ... + 3161620.

Almost surely, 2^12646474 is an apocalyptic number.

12646474 is a deficient number, since it is larger than the sum of its proper divisors (6323240).

12646474 is an equidigital number, since it uses as much as digits as its factorization.

12646474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6323239.

The product of its digits is 32256, while the sum is 34.

The square root of 12646474 is about 3556.1881277570. The cubic root of 12646474 is about 232.9824199130.

The spelling of 12646474 in words is "twelve million, six hundred forty-six thousand, four hundred seventy-four".