12630571 has 4 divisors (see below), whose sum is σ = 12681144. Its totient is φ = 12580000.

The previous prime is 12630559. The next prime is 12630577. The reversal of 12630571 is 17503621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12630571 - 2⁵ = 12630539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12630577) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 24910 + ... + 25411.

It is an arithmetic number, because the mean of its divisors is an integer number (3170286).

Almost surely, 2^12630571 is an apocalyptic number.

12630571 is a deficient number, since it is larger than the sum of its proper divisors (50573).

12630571 is an equidigital number, since it uses as much as digits as its factorization.

12630571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50572.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12630571 is about 3553.9514628087. The cubic root of 12630571 is about 232.8847201226.

The spelling of 12630571 in words is "twelve million, six hundred thirty thousand, five hundred seventy-one".