12456706 has 4 divisors (see below), whose sum is σ = 18685062. Its totient is φ = 6228352.

The previous prime is 12456683. The next prime is 12456709. The reversal of 12456706 is 60765421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60765421 = 71 ⋅855851.

It can be written as a sum of positive squares in only one way, i.e., 11840481 + 616225 = 3441^2 + 785^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12456709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3114175 + ... + 3114178.

Almost surely, 2^12456706 is an apocalyptic number.

12456706 is a deficient number, since it is larger than the sum of its proper divisors (6228356).

12456706 is an equidigital number, since it uses as much as digits as its factorization.

12456706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6228355.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 12456706 is about 3529.4058990147. The cubic root of 12456706 is about 231.8111944861.

The spelling of 12456706 in words is "twelve million, four hundred fifty-six thousand, seven hundred six".