12345667 has 8 divisors (see below), whose sum is σ = 12545280. Its totient is φ = 12147840.

The previous prime is 12345653. The next prime is 12345701. The reversal of 12345667 is 76654321.

It is a happy number.

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 12345667 - 2⁷ = 12345539 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (12345637) 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 7 ways as a sum of consecutive naturals, for example, 20523 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (1568160).

Almost surely, 2^12345667 is an apocalyptic number.

12345667 is a deficient number, since it is larger than the sum of its proper divisors (199613).

12345667 is a wasteful number, since it uses less digits than its factorization.

12345667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893.

The product of its digits is 30240, while the sum is 34.

The square root of 12345667 is about 3513.6401352444. The cubic root of 12345667 is about 231.1203498235.

Adding to 12345667 its reverse (76654321), we get a palindrome (88999988).

The spelling of 12345667 in words is "twelve million, three hundred forty-five thousand, six hundred sixty-seven".