12605638 has 8 divisors (see below), whose sum is σ = 18950688. Its totient is φ = 6288744.

The previous prime is 12605629. The next prime is 12605647. The reversal of 12605638 is 83650621.

It is an interprime number because it is at equal distance from previous prime (12605629) and next prime (12605647).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5881 + ... + 7732.

It is an arithmetic number, because the mean of its divisors is an integer number (2368836).

Almost surely, 2^12605638 is an apocalyptic number.

12605638 is a deficient number, since it is larger than the sum of its proper divisors (6345050).

12605638 is a wasteful number, since it uses less digits than its factorization.

12605638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14078.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 12605638 is about 3550.4419443219. The cubic root of 12605638 is about 232.7313794793.

The spelling of 12605638 in words is "twelve million, six hundred five thousand, six hundred thirty-eight".