12668578 has 24 divisors (see below), whose sum is σ = 21154068. Its totient is φ = 5683392.

The previous prime is 12668569. The next prime is 12668603. The reversal of 12668578 is 87586621.

It can be written as a sum of positive squares in 6 ways, for example, as 786769 + 11881809 = 887^2 + 3447^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12000 + ... + 13012.

Almost surely, 2^12668578 is an apocalyptic number.

12668578 is a deficient number, since it is larger than the sum of its proper divisors (8485490).

12668578 is a wasteful number, since it uses less digits than its factorization.

12668578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1065 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 12668578 is about 3559.2945930339. The cubic root of 12668578 is about 233.1180794904.

The spelling of 12668578 in words is "twelve million, six hundred sixty-eight thousand, five hundred seventy-eight".