12686534 has 16 divisors (see below), whose sum is σ = 22118400. Its totient is φ = 5344584.

The previous prime is 12686521. The next prime is 12686549. The reversal of 12686534 is 43568621.

It is a junction number, because it is equal to n+sod(n) for n = 12686494 and 12686503.

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, 6854 + ... + 8505.

It is an arithmetic number, because the mean of its divisors is an integer number (1382400).

Almost surely, 2^12686534 is an apocalyptic number.

12686534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12686534 is a deficient number, since it is larger than the sum of its proper divisors (9431866).

12686534 is a wasteful number, since it uses less digits than its factorization.

12686534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15427.

The product of its digits is 34560, while the sum is 35.

The square root of 12686534 is about 3561.8161097957. The cubic root of 12686534 is about 233.2281653042.

The spelling of 12686534 in words is "twelve million, six hundred eighty-six thousand, five hundred thirty-four".