12641517 has 48 divisors (see below), whose sum is σ = 22464000. Its totient is φ = 6689952.

The previous prime is 12641509. The next prime is 12641533. The reversal of 12641517 is 71514621.

It is a happy number.

12641517 is a `hidden beast` number, since 1 + 2 + 641 + 5 + 17 = 666.

12641517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12641517 - 2³ = 12641509 is a prime.

It is a super-2 number, since 2×12641517² = 319615904122578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641537) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70534 + ... + 70712.

It is an arithmetic number, because the mean of its divisors is an integer number (468000).

Almost surely, 2^12641517 is an apocalyptic number.

It is an amenable number.

12641517 is a deficient number, since it is larger than the sum of its proper divisors (9822483).

12641517 is a wasteful number, since it uses less digits than its factorization.

12641517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 267 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 12641517 is about 3555.4911053186. The cubic root of 12641517 is about 232.9519754644.

The spelling of 12641517 in words is "twelve million, six hundred forty-one thousand, five hundred seventeen".