12072705 has 8 divisors (see below), whose sum is σ = 19316352. Its totient is φ = 6438768.

The previous prime is 12072689. The next prime is 12072713. The reversal of 12072705 is 50727021.

12072705 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12072705 - 2⁴ = 12072689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402409 + ... + 402438.

It is an arithmetic number, because the mean of its divisors is an integer number (2414544).

Almost surely, 2^12072705 is an apocalyptic number.

12072705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12072705 is a deficient number, since it is larger than the sum of its proper divisors (7243647).

12072705 is an equidigital number, since it uses as much as digits as its factorization.

12072705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804855.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 12072705 is about 3474.5798307133. The cubic root of 12072705 is about 229.4042870092.

Adding to 12072705 its reverse (50727021), we get a palindrome (62799726).

The spelling of 12072705 in words is "twelve million, seventy-two thousand, seven hundred five".