16673999 has 2 divisors, whose sum is σ = 16674000. Its totient is φ = 16673998.

The previous prime is 16673983. The next prime is 16674017. The reversal of 16673999 is 99937661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16673999 - 2⁴ = 16673983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16673929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8336999 + 8337000.

It is an arithmetic number, because the mean of its divisors is an integer number (8337000).

Almost surely, 2^16673999 is an apocalyptic number.

16673999 is a deficient number, since it is larger than the sum of its proper divisors (1).

16673999 is an equidigital number, since it uses as much as digits as its factorization.

16673999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 50.

The square root of 16673999 is about 4083.3808296557. The cubic root of 16673999 is about 255.4739308806.

The spelling of 16673999 in words is "sixteen million, six hundred seventy-three thousand, nine hundred ninety-nine".