13140666 has 96 divisors (see below), whose sum is σ = 37440000. Its totient is φ = 3227040.

The previous prime is 13140649. The next prime is 13140689. The reversal of 13140666 is 66604131.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26085 + ... + 26583.

It is an arithmetic number, because the mean of its divisors is an integer number (390000).

Almost surely, 2^13140666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13140666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18720000).

13140666 is an abundant number, since it is smaller than the sum of its proper divisors (24299334).

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

13140666 is a wasteful number, since it uses less digits than its factorization.

13140666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 13140666 is about 3625.0056551680. The cubic root of 13140666 is about 235.9785123594.

Adding to 13140666 its reverse (66604131), we get a palindrome (79744797).

The spelling of 13140666 in words is "thirteen million, one hundred forty thousand, six hundred sixty-six".