12540660 has 48 divisors (see below), whose sum is σ = 38308032. Its totient is φ = 3040000.

The previous prime is 12540653. The next prime is 12540667. The reversal of 12540660 is 6604521.

It is an interprime number because it is at equal distance from previous prime (12540653) and next prime (12540667).

It is a self number, because there is not a number n which added to its sum of digits gives 12540660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540667) 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, 8841 + ... + 10160.

It is an arithmetic number, because the mean of its divisors is an integer number (798084).

Almost surely, 2^12540660 is an apocalyptic number.

12540660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12540660 is an abundant number, since it is smaller than the sum of its proper divisors (25767372).

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

12540660 is a wasteful number, since it uses less digits than its factorization.

12540660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19024 (or 19022 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 12540660 is about 3541.2794298106. The cubic root of 12540660 is about 232.3308053347.

The spelling of 12540660 in words is "twelve million, five hundred forty thousand, six hundred sixty".