16668170 has 16 divisors (see below), whose sum is σ = 30158568. Its totient is φ = 6632640.

The previous prime is 16668137. The next prime is 16668209. The reversal of 16668170 is 7186661.

It can be written as a sum of positive squares in 4 ways, for example, as 16638241 + 29929 = 4079^2 + 173^2 .

It is a super-2 number, since 2×16668170² = 555655782297800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16668170.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261 + ... + 6200.

Almost surely, 2^16668170 is an apocalyptic number.

16668170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16668170 is a deficient number, since it is larger than the sum of its proper divisors (13490398).

16668170 is a wasteful number, since it uses less digits than its factorization.

16668170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8665.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 16668170 is about 4082.6670204659. The cubic root of 16668170 is about 255.4441573570. Note that the first 3 decimals are identical.

The spelling of 16668170 in words is "sixteen million, six hundred sixty-eight thousand, one hundred seventy".