16671007 has 4 divisors (see below), whose sum is σ = 16919896. Its totient is φ = 16422120.

The previous prime is 16671001. The next prime is 16671019. The reversal of 16671007 is 70017661.

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 16671007 - 2⁷ = 16670879 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 (16671001) 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, 124344 + ... + 124477.

It is an arithmetic number, because the mean of its divisors is an integer number (4229974).

Almost surely, 2^16671007 is an apocalyptic number.

16671007 is a deficient number, since it is larger than the sum of its proper divisors (248889).

16671007 is an equidigital number, since it uses as much as digits as its factorization.

16671007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248888.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 16671007 is about 4083.0144501336. The cubic root of 16671007 is about 255.4586491291.

Adding to 16671007 its reverse (70017661), we get a palindrome (86688668).

The spelling of 16671007 in words is "sixteen million, six hundred seventy-one thousand, seven".