16009605 has 24 divisors (see below), whose sum is σ = 27855360. Its totient is φ = 8506080.

The previous prime is 16009589. The next prime is 16009613. The reversal of 16009605 is 50690061.

It is not a de Polignac number, because 16009605 - 2⁴ = 16009589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15660 + ... + 16650.

It is an arithmetic number, because the mean of its divisors is an integer number (1160640).

Almost surely, 2^16009605 is an apocalyptic number.

16009605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16009605 is a deficient number, since it is larger than the sum of its proper divisors (11845755).

16009605 is a wasteful number, since it uses less digits than its factorization.

16009605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 16009605 is about 4001.2004448665. The cubic root of 16009605 is about 252.0346229828.

Adding to 16009605 its reverse (50690061), we get a palindrome (66699666).

The spelling of 16009605 in words is "sixteen million, nine thousand, six hundred five".