16671013 has 4 divisors (see below), whose sum is σ = 16905888. Its totient is φ = 16436140.

The previous prime is 16671001. The next prime is 16671019. The reversal of 16671013 is 31017661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16671013 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 (16671019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117331 + ... + 117472.

It is an arithmetic number, because the mean of its divisors is an integer number (4226472).

Almost surely, 2^16671013 is an apocalyptic number.

It is an amenable number.

16671013 is a deficient number, since it is larger than the sum of its proper divisors (234875).

16671013 is an equidigital number, since it uses as much as digits as its factorization.

16671013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234874.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 16671013 is about 4083.0151848848. The cubic root of 16671013 is about 255.4586797762.

Adding to 16671013 its reverse (31017661), we get a palindrome (47688674).

The spelling of 16671013 in words is "sixteen million, six hundred seventy-one thousand, thirteen".