16804693 has 4 divisors (see below), whose sum is σ = 16819020. Its totient is φ = 16790368.

The previous prime is 16804679. The next prime is 16804729. The reversal of 16804693 is 39640861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12552849 + 4251844 = 3543^2 + 2062^2 .

It is a cyclic number.

It is not a de Polignac number, because 16804693 - 2⁵ = 16804661 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 (16804633) 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, 5230 + ... + 7807.

It is an arithmetic number, because the mean of its divisors is an integer number (4204755).

Almost surely, 2^16804693 is an apocalyptic number.

It is an amenable number.

16804693 is a deficient number, since it is larger than the sum of its proper divisors (14327).

16804693 is a wasteful number, since it uses less digits than its factorization.

16804693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14326.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 16804693 is about 4099.3527537893. The cubic root of 16804693 is about 256.1396790233.

The spelling of 16804693 in words is "sixteen million, eight hundred four thousand, six hundred ninety-three".