12280667 has 4 divisors (see below), whose sum is σ = 14035056. Its totient is φ = 10526280.

The previous prime is 12280661. The next prime is 12280687. The reversal of 12280667 is 76608221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12280667 - 2¹⁶ = 12215131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12280661) 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, 877184 + ... + 877197.

It is an arithmetic number, because the mean of its divisors is an integer number (3508764).

Almost surely, 2^12280667 is an apocalyptic number.

12280667 is a deficient number, since it is larger than the sum of its proper divisors (1754389).

12280667 is an equidigital number, since it uses as much as digits as its factorization.

12280667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754388.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 12280667 is about 3504.3782615465. The cubic root of 12280667 is about 230.7140192675.

Adding to 12280667 its reverse (76608221), we get a palindrome (88888888).

The spelling of 12280667 in words is "twelve million, two hundred eighty thousand, six hundred sixty-seven".