12071717 has 16 divisors (see below), whose sum is σ = 14856192. Its totient is φ = 9573120.

The previous prime is 12071713. The next prime is 12071729. The reversal of 12071717 is 71717021.

It is a cyclic number.

It is not a de Polignac number, because 12071717 - 2² = 12071713 is a prime.

It is a Duffinian number.

12071717 is a modest number, since divided by 1717 gives 1207 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12071713) by changing a digit.

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, 6428 + ... + 8090.

It is an arithmetic number, because the mean of its divisors is an integer number (928512).

Almost surely, 2^12071717 is an apocalyptic number.

12071717 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12071717 is a deficient number, since it is larger than the sum of its proper divisors (2784475).

12071717 is a wasteful number, since it uses less digits than its factorization.

12071717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

The product of its (nonzero) digits is 686, while the sum is 26.

The square root of 12071717 is about 3474.4376523403. The cubic root of 12071717 is about 229.3980288807.

Adding to 12071717 its reverse (71717021), we get a palindrome (83788738).

The spelling of 12071717 in words is "twelve million, seventy-one thousand, seven hundred seventeen".