12705508 has 6 divisors (see below), whose sum is σ = 22234646. Its totient is φ = 6352752.

The previous prime is 12705503. The next prime is 12705523. The reversal of 12705508 is 80550721.

It can be written as a sum of positive squares in only one way, i.e., 12616704 + 88804 = 3552^2 + 298^2 .

It is a super-2 number, since 2×12705508² = 322859867076128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12705503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1588185 + ... + 1588192.

Almost surely, 2^12705508 is an apocalyptic number.

It is an amenable number.

12705508 is a deficient number, since it is larger than the sum of its proper divisors (9529138).

12705508 is a wasteful number, since it uses less digits than its factorization.

12705508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176381 (or 3176379 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 12705508 is about 3564.4786435045. The cubic root of 12705508 is about 233.3443795224.

The spelling of 12705508 in words is "twelve million, seven hundred five thousand, five hundred eight".