16908697 has 4 divisors (see below), whose sum is σ = 18209380. Its totient is φ = 15608016.

The previous prime is 16908679. The next prime is 16908709. The reversal of 16908697 is 79680961.

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 10653696 + 6255001 = 3264^2 + 2501^2 .

It is a cyclic number.

It is not a de Polignac number, because 16908697 - 2⁷ = 16908569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16908497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650322 + ... + 650347.

It is an arithmetic number, because the mean of its divisors is an integer number (4552345).

Almost surely, 2^16908697 is an apocalyptic number.

It is an amenable number.

16908697 is a deficient number, since it is larger than the sum of its proper divisors (1300683).

16908697 is a wasteful number, since it uses less digits than its factorization.

16908697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300682.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 16908697 is about 4112.0186040435. The cubic root of 16908697 is about 256.6670075519.

The spelling of 16908697 in words is "sixteen million, nine hundred eight thousand, six hundred ninety-seven".