12717684 has 72 divisors (see below), whose sum is σ = 37157120. Its totient is φ = 3592512.

The previous prime is 12717671. The next prime is 12717697. The reversal of 12717684 is 48671721.

12717684 = 127² + 128² + ... + 342².

It is an interprime number because it is at equal distance from previous prime (12717671) and next prime (12717697).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27237 + ... + 27699.

Almost surely, 2^12717684 is an apocalyptic number.

12717684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12717684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18578560).

12717684 is an abundant number, since it is smaller than the sum of its proper divisors (24439436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12717684 is a wasteful number, since it uses less digits than its factorization.

12717684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589 (or 584 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 12717684 is about 3566.1861981674. The cubic root of 12717684 is about 233.4188956050.

It can be divided in two parts, 127176 and 84, that added together give a triangular number (127260 = T₅₀₄).

The spelling of 12717684 in words is "twelve million, seven hundred seventeen thousand, six hundred eighty-four".