12620779 has 4 divisors (see below), whose sum is σ = 12684400. Its totient is φ = 12557160.

The previous prime is 12620711. The next prime is 12620789. The reversal of 12620779 is 97702621.

12620779 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 12620779 - 2¹¹ = 12618731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12620789) 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, 31512 + ... + 31909.

It is an arithmetic number, because the mean of its divisors is an integer number (3171100).

Almost surely, 2^12620779 is an apocalyptic number.

12620779 is a deficient number, since it is larger than the sum of its proper divisors (63621).

12620779 is an equidigital number, since it uses as much as digits as its factorization.

12620779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63620.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 12620779 is about 3552.5735741853. The cubic root of 12620779 is about 232.8245223496.

The spelling of 12620779 in words is "twelve million, six hundred twenty thousand, seven hundred seventy-nine".