12687580 has 24 divisors (see below), whose sum is σ = 27265392. Its totient is φ = 4956672.

The previous prime is 12687551. The next prime is 12687583. The reversal of 12687580 is 8578621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12687583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6517 + ... + 8236.

It is an arithmetic number, because the mean of its divisors is an integer number (1136058).

Almost surely, 2^12687580 is an apocalyptic number.

12687580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12687580 is an abundant number, since it is smaller than the sum of its proper divisors (14577812).

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

12687580 is a wasteful number, since it uses less digits than its factorization.

12687580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14805 (or 14803 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 12687580 is about 3561.9629419746. The cubic root of 12687580 is about 233.2345749865.

The spelling of 12687580 in words is "twelve million, six hundred eighty-seven thousand, five hundred eighty".