12770809 has 8 divisors (see below), whose sum is σ = 13160768. Its totient is φ = 12383280.

The previous prime is 12770801. The next prime is 12770837. The reversal of 12770809 is 90807721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12770809 - 2³ = 12770801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12770801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19924 + ... + 20554.

It is an arithmetic number, because the mean of its divisors is an integer number (1645096).

Almost surely, 2^12770809 is an apocalyptic number.

It is an amenable number.

12770809 is a deficient number, since it is larger than the sum of its proper divisors (389959).

12770809 is an equidigital number, since it uses as much as digits as its factorization.

12770809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 12770809 is about 3573.6268691625. The cubic root of 12770809 is about 233.7434607873.

The spelling of 12770809 in words is "twelve million, seven hundred seventy thousand, eight hundred nine".