12643007 has 8 divisors (see below), whose sum is σ = 13650336. Its totient is φ = 11640672.

The previous prime is 12643003. The next prime is 12643021. The reversal of 12643007 is 70034621.

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 12643007 - 2² = 12643003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643003) 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, 5333 + ... + 7329.

It is an arithmetic number, because the mean of its divisors is an integer number (1706292).

Almost surely, 2^12643007 is an apocalyptic number.

12643007 is a deficient number, since it is larger than the sum of its proper divisors (1007329).

12643007 is a wasteful number, since it uses less digits than its factorization.

12643007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 12643007 is about 3555.7006341929. The cubic root of 12643007 is about 232.9611274464.

Adding to 12643007 its reverse (70034621), we get a palindrome (82677628).

The spelling of 12643007 in words is "twelve million, six hundred forty-three thousand, seven".