12869681 has 24 divisors (see below), whose sum is σ = 15117312. Its totient is φ = 10929600.

The previous prime is 12869671. The next prime is 12869699. The reversal of 12869681 is 18696821.

12869681 = T₈₆ + T₈₇ + ... + T₄₂₆.

It is not a de Polignac number, because 12869681 - 2¹⁰ = 12868657 is a prime.

It is a super-2 number, since 2×12869681² = 331257378083522, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (41472) is a multiple of the sum of its prime divisors (162).

It is not an unprimeable number, because it can be changed into a prime (12869651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176261 + ... + 176333.

It is an arithmetic number, because the mean of its divisors is an integer number (629888).

Almost surely, 2^12869681 is an apocalyptic number.

12869681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12869681 is a deficient number, since it is larger than the sum of its proper divisors (2247631).

12869681 is a wasteful number, since it uses less digits than its factorization.

12869681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 162 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 12869681 is about 3587.4337624547. The cubic root of 12869681 is about 234.3451271200.

It can be divided in two parts, 1 and 2869681, that added together give a palindrome (2869682).

The spelling of 12869681 in words is "twelve million, eight hundred sixty-nine thousand, six hundred eighty-one".