12561763 has 6 divisors (see below), whose sum is σ = 12778764. Its totient is φ = 12345696.

The previous prime is 12561751. The next prime is 12561799. The reversal of 12561763 is 36716521.

It is a de Polignac number, because none of the positive numbers 2^k-12561763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12561733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28795 + ... + 29227.

It is an arithmetic number, because the mean of its divisors is an integer number (2129794).

Almost surely, 2^12561763 is an apocalyptic number.

12561763 is a deficient number, since it is larger than the sum of its proper divisors (217001).

12561763 is an frugal number, since it uses more digits than its factorization.

12561763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 500 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 12561763 is about 3544.2577502208. The cubic root of 12561763 is about 232.4610517870.

The spelling of 12561763 in words is "twelve million, five hundred sixty-one thousand, seven hundred sixty-three".