12550660 has 36 divisors (see below), whose sum is σ = 27275724. Its totient is φ = 4850880.

The previous prime is 12550639. The next prime is 12550669. The reversal of 12550660 is 6605521.

It can be written as a sum of positive squares in 2 ways, for example, as 3694084 + 8856576 = 1922^2 + 2976^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12550669) 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, 18894 + ... + 19546.

It is an arithmetic number, because the mean of its divisors is an integer number (757659).

Almost surely, 2^12550660 is an apocalyptic number.

12550660 is a gapful number since it is divisible by the number (10) 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 12550660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13637862).

12550660 is an abundant number, since it is smaller than the sum of its proper divisors (14725064).

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

12550660 is a wasteful number, since it uses less digits than its factorization.

12550660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 12550660 is about 3542.6910675361. The cubic root of 12550660 is about 232.3925429356.

The spelling of 12550660 in words is "twelve million, five hundred fifty thousand, six hundred sixty".