12712761 has 16 divisors (see below), whose sum is σ = 18960000. Its totient is φ = 8418384.

The previous prime is 12712751. The next prime is 12712783. The reversal of 12712761 is 16721721.

It is not a de Polignac number, because 12712761 - 2¹⁰ = 12711737 is a prime.

It is a super-2 number, since 2×12712761² = 323228584486242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12712741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2740 + ... + 5738.

It is an arithmetic number, because the mean of its divisors is an integer number (1185000).

Almost surely, 2^12712761 is an apocalyptic number.

It is an amenable number.

12712761 is a deficient number, since it is larger than the sum of its proper divisors (6247239).

12712761 is a wasteful number, since it uses less digits than its factorization.

12712761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3165 (or 3159 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 12712761 is about 3565.4958981886. The cubic root of 12712761 is about 233.3887729944.

The spelling of 12712761 in words is "twelve million, seven hundred twelve thousand, seven hundred sixty-one".