12708779 has 4 divisors (see below), whose sum is σ = 13004376. Its totient is φ = 12413184.

The previous prime is 12708767. The next prime is 12708781. The reversal of 12708779 is 97780721.

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 12708779 - 2⁸ = 12708523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12708749) 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, 147734 + ... + 147819.

It is an arithmetic number, because the mean of its divisors is an integer number (3251094).

Almost surely, 2^12708779 is an apocalyptic number.

12708779 is a deficient number, since it is larger than the sum of its proper divisors (295597).

12708779 is an equidigital number, since it uses as much as digits as its factorization.

12708779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295596.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 12708779 is about 3564.9374468565. The cubic root of 12708779 is about 233.3644024388.

The spelling of 12708779 in words is "twelve million, seven hundred eight thousand, seven hundred seventy-nine".