12632643 has 6 divisors (see below), whose sum is σ = 18247164. Its totient is φ = 8421756.

The previous prime is 12632639. The next prime is 12632657. The reversal of 12632643 is 34623621.

12632643 is a `hidden beast` number, since 12 + 6 + 3 + 2 + 643 = 666.

It is not a de Polignac number, because 12632643 - 2² = 12632639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12632623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 701805 + ... + 701822.

It is an arithmetic number, because the mean of its divisors is an integer number (3041194).

Almost surely, 2^12632643 is an apocalyptic number.

12632643 is a deficient number, since it is larger than the sum of its proper divisors (5614521).

12632643 is a wasteful number, since it uses less digits than its factorization.

12632643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403633 (or 1403630 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 12632643 is about 3554.2429573680. The cubic root of 12632643 is about 232.8974540614.

The spelling of 12632643 in words is "twelve million, six hundred thirty-two thousand, six hundred forty-three".