166727216 has 10 divisors (see below), whose sum is σ = 323034012. Its totient is φ = 83363600.

The previous prime is 166727203. The next prime is 166727221. The reversal of 166727216 is 612727661.

It is a super-2 number, since 2×166727216² = 55595929110221312, 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 166727216.

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, 5210210 + ... + 5210241.

Almost surely, 2^166727216 is an apocalyptic number.

166727216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166727216 is a deficient number, since it is larger than the sum of its proper divisors (156306796).

166727216 is a wasteful number, since it uses less digits than its factorization.

166727216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10420459 (or 10420453 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 166727216 is about 12912.2893400047. The cubic root of 166727216 is about 550.3878432449.

The spelling of 166727216 in words is "one hundred sixty-six million, seven hundred twenty-seven thousand, two hundred sixteen".