16697812 has 6 divisors (see below), whose sum is σ = 29221178. Its totient is φ = 8348904.

The previous prime is 16697797. The next prime is 16697843. The reversal of 16697812 is 21879661.

It can be written as a sum of positive squares in only one way, i.e., 15023376 + 1674436 = 3876^2 + 1294^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2087223 + ... + 2087230.

Almost surely, 2^16697812 is an apocalyptic number.

It is an amenable number.

16697812 is a deficient number, since it is larger than the sum of its proper divisors (12523366).

16697812 is a wasteful number, since it uses less digits than its factorization.

16697812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174457 (or 4174455 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 16697812 is about 4086.2956329664. The cubic root of 16697812 is about 255.5954915394.

The spelling of 16697812 in words is "sixteen million, six hundred ninety-seven thousand, eight hundred twelve".