12960505 has 8 divisors (see below), whose sum is σ = 15639624. Its totient is φ = 10310400.

The previous prime is 12960491. The next prime is 12960509. The reversal of 12960505 is 50506921.

It can be written as a sum of positive squares in 4 ways, for example, as 1590121 + 11370384 = 1261^2 + 3372^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12960505 - 2⁵ = 12960473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12960509) 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 7 ways as a sum of consecutive naturals, for example, 6256 + ... + 8065.

It is an arithmetic number, because the mean of its divisors is an integer number (1954953).

Almost surely, 2^12960505 is an apocalyptic number.

It is an amenable number.

12960505 is a deficient number, since it is larger than the sum of its proper divisors (2679119).

12960505 is a wasteful number, since it uses less digits than its factorization.

12960505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14507.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 12960505 is about 3600.0701382056. The cubic root of 12960505 is about 234.8951093690.

The spelling of 12960505 in words is "twelve million, nine hundred sixty thousand, five hundred five".