12772761 has 4 divisors (see below), whose sum is σ = 17030352. Its totient is φ = 8515172.

The previous prime is 12772757. The next prime is 12772777. The reversal of 12772761 is 16727721.

It is a happy number.

12772761 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12772761 - 2² = 12772757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12771761) 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, 2128791 + ... + 2128796.

It is an arithmetic number, because the mean of its divisors is an integer number (4257588).

Almost surely, 2^12772761 is an apocalyptic number.

It is an amenable number.

12772761 is a deficient number, since it is larger than the sum of its proper divisors (4257591).

12772761 is an equidigital number, since it uses as much as digits as its factorization.

12772761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257590.

The product of its digits is 8232, while the sum is 33.

The square root of 12772761 is about 3573.8999706203. The cubic root of 12772761 is about 233.7553692991.

The spelling of 12772761 in words is "twelve million, seven hundred seventy-two thousand, seven hundred sixty-one".