166016 has 16 divisors (see below), whose sum is σ = 330990. Its totient is φ = 82944.

The previous prime is 166013. The next prime is 166021. The reversal of 166016 is 610661.

It can be written as a sum of positive squares in only one way, i.e., 87616 + 78400 = 296^2 + 280^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×166016² = 55122624512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521 + ... + 776.

2¹⁶⁶⁰¹⁶ is an apocalyptic number.

166016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166016 is a deficient number, since it is larger than the sum of its proper divisors (164974).

166016 is an equidigital number, since it uses as much as digits as its factorization.

166016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 166016 is about 407.4506105039. The cubic root of 166016 is about 54.9604122839.

Adding to 166016 its reverse (610661), we get a palindrome (776677).

The spelling of 166016 in words is "one hundred sixty-six thousand, sixteen".