12660379 has 4 divisors (see below), whose sum is σ = 12717376. Its totient is φ = 12603384.

The previous prime is 12660377. The next prime is 12660409. The reversal of 12660379 is 97306621.

12660379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12660379 - 2¹ = 12660377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12660377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28164 + ... + 28609.

It is an arithmetic number, because the mean of its divisors is an integer number (3179344).

Almost surely, 2^12660379 is an apocalyptic number.

12660379 is a deficient number, since it is larger than the sum of its proper divisors (56997).

12660379 is an equidigital number, since it uses as much as digits as its factorization.

12660379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56996.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 12660379 is about 3558.1426334536. The cubic root of 12660379 is about 233.0677779328.

The spelling of 12660379 in words is "twelve million, six hundred sixty thousand, three hundred seventy-nine".