12705544 has 8 divisors (see below), whose sum is σ = 23822910. Its totient is φ = 6352768.

The previous prime is 12705523. The next prime is 12705569. The reversal of 12705544 is 44550721.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 1077444 = 3410^2 + 1038^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12705544² = 322861696671872, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 794089 + ... + 794104.

Almost surely, 2^12705544 is an apocalyptic number.

It is an amenable number.

12705544 is a deficient number, since it is larger than the sum of its proper divisors (11117366).

12705544 is a wasteful number, since it uses less digits than its factorization.

12705544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588199 (or 1588195 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 12705544 is about 3564.4836933278. The cubic root of 12705544 is about 233.3445999095.

The spelling of 12705544 in words is "twelve million, seven hundred five thousand, five hundred forty-four".