12906506 has 4 divisors (see below), whose sum is σ = 19359762. Its totient is φ = 6453252.

The previous prime is 12906497. The next prime is 12906511. The reversal of 12906506 is 60560921.

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., 9517225 + 3389281 = 3085^2 + 1841^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3226625 + ... + 3226628.

Almost surely, 2^12906506 is an apocalyptic number.

12906506 is a deficient number, since it is larger than the sum of its proper divisors (6453256).

12906506 is an equidigital number, since it uses as much as digits as its factorization.

12906506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453255.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 12906506 is about 3592.5625951401. The cubic root of 12906506 is about 234.5684307997.

The spelling of 12906506 in words is "twelve million, nine hundred six thousand, five hundred six".