12861008 has 10 divisors (see below), whose sum is σ = 24918234. Its totient is φ = 6430496.

The previous prime is 12860977. The next prime is 12861029. The reversal of 12861008 is 80016821.

It can be written as a sum of positive squares in only one way, i.e., 10705984 + 2155024 = 3272^2 + 1468^2 .

It is a super-3 number, since 3×12861008³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401891 + ... + 401922.

Almost surely, 2^12861008 is an apocalyptic number.

It is an amenable number.

12861008 is a deficient number, since it is larger than the sum of its proper divisors (12057226).

12861008 is an equidigital number, since it uses as much as digits as its factorization.

12861008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803821 (or 803815 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 12861008 is about 3586.2247559237. The cubic root of 12861008 is about 234.2924728228.

Adding to 12861008 its reverse (80016821), we get a palindrome (92877829).

The spelling of 12861008 in words is "twelve million, eight hundred sixty-one thousand, eight".