12782605 has 8 divisors (see below), whose sum is σ = 16733664. Its totient is φ = 9296400.

The previous prime is 12782599. The next prime is 12782629. The reversal of 12782605 is 50628721.

12782605 = T₁₅₁₉ + T₁₅₂₀ + ... + T₁₅₂₉.

12782605 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12782605 - 2¹¹ = 12780557 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 116151 + ... + 116260.

It is an arithmetic number, because the mean of its divisors is an integer number (2091708).

Almost surely, 2^12782605 is an apocalyptic number.

It is an amenable number.

12782605 is a deficient number, since it is larger than the sum of its proper divisors (3951059).

12782605 is a wasteful number, since it uses less digits than its factorization.

12782605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232427.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 12782605 is about 3575.2769123524. The cubic root of 12782605 is about 233.8154058346.

It can be divided in two parts, 1278 and 2605, that added together give a palindrome (3883).

The spelling of 12782605 in words is "twelve million, seven hundred eighty-two thousand, six hundred five".