12770761 has 4 divisors (see below), whose sum is σ = 12790800. Its totient is φ = 12750724.

The previous prime is 12770749. The next prime is 12770789. The reversal of 12770761 is 16707721.

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 12770761 - 2¹¹ = 12768713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12770711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9031 + ... + 10348.

It is an arithmetic number, because the mean of its divisors is an integer number (3197700).

Almost surely, 2^12770761 is an apocalyptic number.

It is an amenable number.

12770761 is a deficient number, since it is larger than the sum of its proper divisors (20039).

12770761 is an equidigital number, since it uses as much as digits as its factorization.

12770761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20038.

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 12770761 is about 3573.6201532899. The cubic root of 12770761 is about 233.7431679397.

It can be divided in two parts, 12770 and 761, that added together give a palindrome (13531).

The spelling of 12770761 in words is "twelve million, seven hundred seventy thousand, seven hundred sixty-one".