12648631 has 2 divisors, whose sum is σ = 12648632. Its totient is φ = 12648630.

The previous prime is 12648613. The next prime is 12648659. The reversal of 12648631 is 13684621.

It is a happy number.

Together with previous prime (12648613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12648631 - 2¹¹ = 12646583 is a prime.

It is a super-2 number, since 2×12648631² = 319975732348322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12648593 and 12648602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12648431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324315 + 6324316.

It is an arithmetic number, because the mean of its divisors is an integer number (6324316).

Almost surely, 2^12648631 is an apocalyptic number.

12648631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12648631 is an equidigital number, since it uses as much as digits as its factorization.

12648631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 12648631 is about 3556.4913889956. The cubic root of 12648631 is about 232.9956650940.

The spelling of 12648631 in words is "twelve million, six hundred forty-eight thousand, six hundred thirty-one".