12813761 has 2 divisors, whose sum is σ = 12813762. Its totient is φ = 12813760.

The previous prime is 12813707. The next prime is 12813791. The reversal of 12813761 is 16731821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7263025 + 5550736 = 2695^2 + 2356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12813761 is a prime.

It is not a weakly prime, because it can be changed into another prime (12813701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6406880 + 6406881.

It is an arithmetic number, because the mean of its divisors is an integer number (6406881).

Almost surely, 2^12813761 is an apocalyptic number.

It is an amenable number.

12813761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12813761 is an equidigital number, since it uses as much as digits as its factorization.

12813761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 12813761 is about 3579.6314056059. The cubic root of 12813761 is about 234.0052169680.

The spelling of 12813761 in words is "twelve million, eight hundred thirteen thousand, seven hundred sixty-one".