16997716 has 6 divisors (see below), whose sum is σ = 29746010. Its totient is φ = 8498856.

The previous prime is 16997707. The next prime is 16997767. The reversal of 16997716 is 61779961.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 2709316 = 3780^2 + 1646^2 .

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 as a sum of consecutive naturals, namely, 2124711 + ... + 2124718.

Almost surely, 2^16997716 is an apocalyptic number.

It is an amenable number.

16997716 is a deficient number, since it is larger than the sum of its proper divisors (12748294).

16997716 is a wasteful number, since it uses less digits than its factorization.

16997716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249433 (or 4249431 counting only the distinct ones).

The product of its digits is 142884, while the sum is 46.

The square root of 16997716 is about 4122.8286406301. The cubic root of 16997716 is about 257.1166432419.

The spelling of 16997716 in words is "sixteen million, nine hundred ninety-seven thousand, seven hundred sixteen".