12635973 has 24 divisors (see below), whose sum is σ = 21778560. Its totient is φ = 7219800.

The previous prime is 12635963. The next prime is 12635977. The reversal of 12635973 is 37953621.

12635973 is a `hidden beast` number, since 1 + 2 + 63 + 597 + 3 = 666.

It is not a de Polignac number, because 12635973 - 2⁹ = 12635461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12635977) 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 23 ways as a sum of consecutive naturals, for example, 3453 + ... + 6098.

It is an arithmetic number, because the mean of its divisors is an integer number (907440).

Almost surely, 2^12635973 is an apocalyptic number.

It is an amenable number.

12635973 is a deficient number, since it is larger than the sum of its proper divisors (9142587).

12635973 is an equidigital number, since it uses as much as digits as its factorization.

12635973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9574 (or 9561 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 12635973 is about 3554.7113806890. The cubic root of 12635973 is about 232.9179164035.

The spelling of 12635973 in words is "twelve million, six hundred thirty-five thousand, nine hundred seventy-three".