16673639 has 2 divisors, whose sum is σ = 16673640. Its totient is φ = 16673638.

The previous prime is 16673627. The next prime is 16673647. The reversal of 16673639 is 93637661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16673639 - 2⁴ = 16673623 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 16673596 and 16673605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16673609) 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, 8336819 + 8336820.

It is an arithmetic number, because the mean of its divisors is an integer number (8336820).

Almost surely, 2^16673639 is an apocalyptic number.

16673639 is a deficient number, since it is larger than the sum of its proper divisors (1).

16673639 is an equidigital number, since it uses as much as digits as its factorization.

16673639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 41.

The square root of 16673639 is about 4083.3367482979. The cubic root of 16673639 is about 255.4720922639.

The spelling of 16673639 in words is "sixteen million, six hundred seventy-three thousand, six hundred thirty-nine".