12641705 has 8 divisors (see below), whose sum is σ = 15317952. Its totient is φ = 10014768.

The previous prime is 12641683. The next prime is 12641723. The reversal of 12641705 is 50714621.

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

It is a cyclic number.

It is not a de Polignac number, because 12641705 - 2⁶ = 12641641 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 11759 + ... + 12788.

It is an arithmetic number, because the mean of its divisors is an integer number (1914744).

Almost surely, 2^12641705 is an apocalyptic number.

It is an amenable number.

12641705 is a deficient number, since it is larger than the sum of its proper divisors (2676247).

12641705 is a wasteful number, since it uses less digits than its factorization.

12641705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24655.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 12641705 is about 3555.5175431996. The cubic root of 12641705 is about 232.9531302508.

The spelling of 12641705 in words is "twelve million, six hundred forty-one thousand, seven hundred five".