16609673 has 2 divisors, whose sum is σ = 16609674. Its totient is φ = 16609672.

The previous prime is 16609643. The next prime is 16609687. The reversal of 16609673 is 37690661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16418704 + 190969 = 4052^2 + 437^2 .

It is a cyclic number.

It is not a de Polignac number, because 16609673 - 2¹² = 16605577 is a prime.

It is not a weakly prime, because it can be changed into another prime (16609603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8304836 + 8304837.

It is an arithmetic number, because the mean of its divisors is an integer number (8304837).

Almost surely, 2^16609673 is an apocalyptic number.

It is an amenable number.

16609673 is a deficient number, since it is larger than the sum of its proper divisors (1).

16609673 is an equidigital number, since it uses as much as digits as its factorization.

16609673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 16609673 is about 4075.4966568505. The cubic root of 16609673 is about 255.1449797121.

The spelling of 16609673 in words is "sixteen million, six hundred nine thousand, six hundred seventy-three".