16668297 has 12 divisors (see below), whose sum is σ = 24853504. Its totient is φ = 10753560.

The previous prime is 16668287. The next prime is 16668299. The reversal of 16668297 is 79286661.

It is not a de Polignac number, because 16668297 - 2⁶ = 16668233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16668299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29593 + ... + 30150.

Almost surely, 2^16668297 is an apocalyptic number.

It is an amenable number.

16668297 is a deficient number, since it is larger than the sum of its proper divisors (8185207).

16668297 is a wasteful number, since it uses less digits than its factorization.

16668297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59780 (or 59777 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 16668297 is about 4082.6825739947. The cubic root of 16668297 is about 255.4448061250. Note that the first 3 decimals are identical.

The spelling of 16668297 in words is "sixteen million, six hundred sixty-eight thousand, two hundred ninety-seven".