12645580 has 24 divisors (see below), whose sum is σ = 26954928. Its totient is φ = 4982208.

The previous prime is 12645547. The next prime is 12645623. The reversal of 12645580 is 8554621.

It is an unprimeable number.

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, 3379 + ... + 6058.

It is an arithmetic number, because the mean of its divisors is an integer number (1123122).

Almost surely, 2^12645580 is an apocalyptic number.

12645580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12645580 is an abundant number, since it is smaller than the sum of its proper divisors (14309348).

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

12645580 is a wasteful number, since it uses less digits than its factorization.

12645580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9513 (or 9511 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 12645580 is about 3556.0624291483. The cubic root of 12645580 is about 232.9769298138.

It can be divided in two parts, 12645 and 580, that added together give a square (13225 = 115²).

The spelling of 12645580 in words is "twelve million, six hundred forty-five thousand, five hundred eighty".