12739685 has 16 divisors (see below), whose sum is σ = 17576832. Its totient is φ = 8683200.

The previous prime is 12739673. The next prime is 12739687. The reversal of 12739685 is 58693721.

It is not a de Polignac number, because 12739685 - 2⁴ = 12739669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12739687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5330 + ... + 7340.

It is an arithmetic number, because the mean of its divisors is an integer number (1098552).

Almost surely, 2^12739685 is an apocalyptic number.

It is an amenable number.

12739685 is a deficient number, since it is larger than the sum of its proper divisors (4837147).

12739685 is a wasteful number, since it uses less digits than its factorization.

12739685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204.

The product of its digits is 90720, while the sum is 41.

The square root of 12739685 is about 3569.2695331118. The cubic root of 12739685 is about 233.5534193281.

The spelling of 12739685 in words is "twelve million, seven hundred thirty-nine thousand, six hundred eighty-five".