12078713 has 4 divisors (see below), whose sum is σ = 12085668. Its totient is φ = 12071760.

The previous prime is 12078709. The next prime is 12078719. The reversal of 12078713 is 31787021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31787021 = 7 ⋅4541003.

It can be written as a sum of positive squares in 2 ways, for example, as 11505664 + 573049 = 3392^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 12078713 - 2² = 12078709 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12078719) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1583 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (3021417).

Almost surely, 2^12078713 is an apocalyptic number.

It is an amenable number.

12078713 is a deficient number, since it is larger than the sum of its proper divisors (6955).

12078713 is an equidigital number, since it uses as much as digits as its factorization.

12078713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6954.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 12078713 is about 3475.4442881450. Note that the first 3 decimals coincide. The cubic root of 12078713 is about 229.4423351624.

The spelling of 12078713 in words is "twelve million, seventy-eight thousand, seven hundred thirteen".