12147623 has 4 divisors (see below), whose sum is σ = 12155640. Its totient is φ = 12139608.

The previous prime is 12147599. The next prime is 12147659. The reversal of 12147623 is 32674121.

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.

It is a cyclic number.

It is not a de Polignac number, because 12147623 - 2⁶ = 12147559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12147592 and 12147601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965 + ... + 5022.

It is an arithmetic number, because the mean of its divisors is an integer number (3038910).

Almost surely, 2^12147623 is an apocalyptic number.

12147623 is a deficient number, since it is larger than the sum of its proper divisors (8017).

12147623 is an equidigital number, since it uses as much as digits as its factorization.

12147623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8016.

The product of its digits is 2016, while the sum is 26.

The square root of 12147623 is about 3485.3440289303. The cubic root of 12147623 is about 229.8778368265.

The spelling of 12147623 in words is "twelve million, one hundred forty-seven thousand, six hundred twenty-three".