12705565 has 8 divisors (see below), whose sum is σ = 15395328. Its totient is φ = 10065360.

The previous prime is 12705523. The next prime is 12705569. The reversal of 12705565 is 56550721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12705565 - 2⁷ = 12705437 is a prime.

It is a super-2 number, since 2×12705565² = 322862763938450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12705569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11821 + ... + 12850.

It is an arithmetic number, because the mean of its divisors is an integer number (1924416).

Almost surely, 2^12705565 is an apocalyptic number.

It is an amenable number.

12705565 is a deficient number, since it is larger than the sum of its proper divisors (2689763).

12705565 is a wasteful number, since it uses less digits than its factorization.

12705565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24779.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 12705565 is about 3564.4866390548. The cubic root of 12705565 is about 233.3447284684.

The spelling of 12705565 in words is "twelve million, seven hundred five thousand, five hundred sixty-five".