12694505 has 16 divisors (see below), whose sum is σ = 16015104. Its totient is φ = 9641280.

The previous prime is 12694471. The next prime is 12694511. The reversal of 12694505 is 50549621.

It is a happy number.

It is not a de Polignac number, because 12694505 - 2¹⁴ = 12678121 is a prime.

It is a super-2 number, since 2×12694505² = 322300914390050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18875 + ... + 19535.

It is an arithmetic number, because the mean of its divisors is an integer number (1000944).

Almost surely, 2^12694505 is an apocalyptic number.

It is an amenable number.

12694505 is a deficient number, since it is larger than the sum of its proper divisors (3320599).

12694505 is a wasteful number, since it uses less digits than its factorization.

12694505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 12694505 is about 3562.9348857368. The cubic root of 12694505 is about 233.2770011404.

The spelling of 12694505 in words is "twelve million, six hundred ninety-four thousand, five hundred five".