12961677 has 4 divisors (see below), whose sum is σ = 17282240. Its totient is φ = 8641116.

The previous prime is 12961657. The next prime is 12961681. The reversal of 12961677 is 77616921.

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: 77616921 = 3 ⋅25872307.

It is not a de Polignac number, because 12961677 - 2¹⁰ = 12960653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12961607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2160277 + ... + 2160282.

It is an arithmetic number, because the mean of its divisors is an integer number (4320560).

Almost surely, 2^12961677 is an apocalyptic number.

It is an amenable number.

12961677 is a deficient number, since it is larger than the sum of its proper divisors (4320563).

12961677 is an equidigital number, since it uses as much as digits as its factorization.

12961677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320562.

The product of its digits is 31752, while the sum is 39.

The square root of 12961677 is about 3600.2329091324. The cubic root of 12961677 is about 234.9021895656.

The spelling of 12961677 in words is "twelve million, nine hundred sixty-one thousand, six hundred seventy-seven".