12639602 has 16 divisors (see below), whose sum is σ = 20305080. Its totient is φ = 5879808.

The previous prime is 12639577. The next prime is 12639637. The reversal of 12639602 is 20693621.

12639602 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 4 ways, for example, as 12327121 + 312481 = 3511^2 + 559^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 938 + ... + 5114.

Almost surely, 2^12639602 is an apocalyptic number.

12639602 is a deficient number, since it is larger than the sum of its proper divisors (7665478).

12639602 is a wasteful number, since it uses less digits than its factorization.

12639602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 12639602 is about 3555.2217933625. The cubic root of 12639602 is about 232.9402119617.

The spelling of 12639602 in words is "twelve million, six hundred thirty-nine thousand, six hundred two".