16981466 has 8 divisors (see below), whose sum is σ = 25600800. Its totient is φ = 8447868.

The previous prime is 16981463. The next prime is 16981477. The reversal of 16981466 is 66418961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16981463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20936 + ... + 21731.

It is an arithmetic number, because the mean of its divisors is an integer number (3200100).

Almost surely, 2^16981466 is an apocalyptic number.

16981466 is a deficient number, since it is larger than the sum of its proper divisors (8619334).

16981466 is a wasteful number, since it uses less digits than its factorization.

16981466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42868.

The product of its digits is 62208, while the sum is 41.

The square root of 16981466 is about 4120.8574350492. The cubic root of 16981466 is about 257.0346816888.

The spelling of 16981466 in words is "sixteen million, nine hundred eighty-one thousand, four hundred sixty-six".