12703561 has 6 divisors (see below), whose sum is σ = 13756110. Its totient is φ = 11726208.

The previous prime is 12703553. The next prime is 12703577. The reversal of 12703561 is 16530721.

12703561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 65536 + 12638025 = 256^2 + 3555^2 .

It is not a de Polignac number, because 12703561 - 2³ = 12703553 is a prime.

It is a super-2 number, since 2×12703561² = 322760924161442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12703501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37416 + ... + 37753.

It is an arithmetic number, because the mean of its divisors is an integer number (2292685).

Almost surely, 2^12703561 is an apocalyptic number.

It is an amenable number.

12703561 is a deficient number, since it is larger than the sum of its proper divisors (1052549).

12703561 is an equidigital number, since it uses as much as digits as its factorization.

12703561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75195 (or 75182 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12703561 is about 3564.2055215714. The cubic root of 12703561 is about 233.3324596339.

The spelling of 12703561 in words is "twelve million, seven hundred three thousand, five hundred sixty-one".