12660984 has 48 divisors (see below), whose sum is σ = 39190320. Its totient is φ = 3617280.

The previous prime is 12660983. The next prime is 12660997. The reversal of 12660984 is 48906621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12057 + ... + 13064.

It is an arithmetic number, because the mean of its divisors is an integer number (816465).

Almost surely, 2^12660984 is an apocalyptic number.

12660984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12660984 is an abundant number, since it is smaller than the sum of its proper divisors (26529336).

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

12660984 is a wasteful number, since it uses less digits than its factorization.

12660984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25140 (or 25133 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 12660984 is about 3558.2276487038. The cubic root of 12660984 is about 233.0714904009.

It can be divided in two parts, 126 and 60984, that multiplied together give a square (7683984 = 2772²).

The spelling of 12660984 in words is "twelve million, six hundred sixty thousand, nine hundred eighty-four".