16704143 has 4 divisors (see below), whose sum is σ = 16891920. Its totient is φ = 16516368.

The previous prime is 16704137. The next prime is 16704157. The reversal of 16704143 is 34140761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34140761 = 2027 ⋅16843.

It is a cyclic number.

It is not a de Polignac number, because 16704143 - 2¹⁰ = 16703119 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 (16704043) 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, 93755 + ... + 93932.

It is an arithmetic number, because the mean of its divisors is an integer number (4222980).

Almost surely, 2^16704143 is an apocalyptic number.

16704143 is a deficient number, since it is larger than the sum of its proper divisors (187777).

16704143 is an equidigital number, since it uses as much as digits as its factorization.

16704143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187776.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 16704143 is about 4087.0702220539. The cubic root of 16704143 is about 255.6277905933.

The spelling of 16704143 in words is "sixteen million, seven hundred four thousand, one hundred forty-three".