12631716 has 18 divisors (see below), whose sum is σ = 31930262. Its totient is φ = 4210560.

The previous prime is 12631699. The next prime is 12631721. The reversal of 12631716 is 61713621.

12631716 is a `hidden beast` number, since 12 + 631 + 7 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12574116 + 57600 = 3546^2 + 240^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 12631716.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 175405 + ... + 175476.

Almost surely, 2^12631716 is an apocalyptic number.

It is an amenable number.

12631716 is an abundant number, since it is smaller than the sum of its proper divisors (19298546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12631716 is a wasteful number, since it uses less digits than its factorization.

12631716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350891 (or 350886 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12631716 is about 3554.1125474582. The cubic root of 12631716 is about 232.8917571480.

The spelling of 12631716 in words is "twelve million, six hundred thirty-one thousand, seven hundred sixteen".