12915761 has 4 divisors (see below), whose sum is σ = 12938352. Its totient is φ = 12893172.

The previous prime is 12915757. The next prime is 12915803. The reversal of 12915761 is 16751921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16751921 = 149 ⋅112429.

It is a cyclic number.

It is not a de Polignac number, because 12915761 - 2² = 12915757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12915751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10415 + ... + 11588.

It is an arithmetic number, because the mean of its divisors is an integer number (3234588).

Almost surely, 2^12915761 is an apocalyptic number.

It is an amenable number.

12915761 is a deficient number, since it is larger than the sum of its proper divisors (22591).

12915761 is an equidigital number, since it uses as much as digits as its factorization.

12915761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22590.

The product of its digits is 3780, while the sum is 32.

The square root of 12915761 is about 3593.8504420746. The cubic root of 12915761 is about 234.6244855296.

The spelling of 12915761 in words is "twelve million, nine hundred fifteen thousand, seven hundred sixty-one".