16662572 has 6 divisors (see below), whose sum is σ = 29159508. Its totient is φ = 8331284.

The previous prime is 16662571. The next prime is 16662587. The reversal of 16662572 is 27526661.

It is not an unprimeable number, because it can be changed into a prime (16662571) by changing a digit.

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, 2082818 + ... + 2082825.

It is an arithmetic number, because the mean of its divisors is an integer number (4859918).

Almost surely, 2^16662572 is an apocalyptic number.

It is an amenable number.

16662572 is a deficient number, since it is larger than the sum of its proper divisors (12496936).

16662572 is a wasteful number, since it uses less digits than its factorization.

16662572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165647 (or 4165645 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 16662572 is about 4081.9813816332. The cubic root of 16662572 is about 255.4155572066.

The spelling of 16662572 in words is "sixteen million, six hundred sixty-two thousand, five hundred seventy-two".