12667945 has 8 divisors (see below), whose sum is σ = 15220800. Its totient is φ = 10121520.

The previous prime is 12667943. The next prime is 12667951. The reversal of 12667945 is 54976621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12667945 - 2¹ = 12667943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12667898 and 12667907.

It is not an unprimeable number, because it can be changed into a prime (12667943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6090 + ... + 7900.

It is an arithmetic number, because the mean of its divisors is an integer number (1902600).

Almost surely, 2^12667945 is an apocalyptic number.

It is an amenable number.

12667945 is a deficient number, since it is larger than the sum of its proper divisors (2552855).

12667945 is a wasteful number, since it uses less digits than its factorization.

12667945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215.

The product of its digits is 90720, while the sum is 40.

The square root of 12667945 is about 3559.2056698089. The cubic root of 12667945 is about 233.1141967552.

The spelling of 12667945 in words is "twelve million, six hundred sixty-seven thousand, nine hundred forty-five".