12717765 has 12 divisors (see below), whose sum is σ = 22044204. Its totient is φ = 6782784.

The previous prime is 12717763. The next prime is 12717769. The reversal of 12717765 is 56771721.

It can be written as a sum of positive squares in 2 ways, for example, as 2259009 + 10458756 = 1503^2 + 3234^2 .

It is not a de Polignac number, because 12717765 - 2¹ = 12717763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12717763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141264 + ... + 141353.

It is an arithmetic number, because the mean of its divisors is an integer number (1837017).

Almost surely, 2^12717765 is an apocalyptic number.

12717765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12717765 is a deficient number, since it is larger than the sum of its proper divisors (9326439).

12717765 is a wasteful number, since it uses less digits than its factorization.

12717765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282628 (or 282625 counting only the distinct ones).

The product of its digits is 20580, while the sum is 36.

The square root of 12717765 is about 3566.1975548194. The cubic root of 12717765 is about 233.4193911588.

The spelling of 12717765 in words is "twelve million, seven hundred seventeen thousand, seven hundred sixty-five".