12705965 has 16 divisors (see below), whose sum is σ = 16262400. Its totient is φ = 9502272.

The previous prime is 12705923. The next prime is 12705983. The reversal of 12705965 is 56950721.

It is a cyclic number.

It is not a de Polignac number, because 12705965 - 2¹⁰ = 12704941 is a prime.

It is a super-2 number, since 2×12705965² = 322883093162450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6659 + ... + 8351.

It is an arithmetic number, because the mean of its divisors is an integer number (1016400).

Almost surely, 2^12705965 is an apocalyptic number.

It is an amenable number.

12705965 is a deficient number, since it is larger than the sum of its proper divisors (3556435).

12705965 is a wasteful number, since it uses less digits than its factorization.

12705965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 12705965 is about 3564.5427476747. The cubic root of 12705965 is about 233.3471771832.

The spelling of 12705965 in words is "twelve million, seven hundred five thousand, nine hundred sixty-five".