166616 has 16 divisors (see below), whose sum is σ = 318600. Its totient is φ = 81664.

The previous prime is 166613. The next prime is 166619. The reversal of 166616 is 616661.

166616 is nontrivially palindromic in base 12.

It is an interprime number because it is at equal distance from previous prime (166613) and next prime (166619).

It is a plaindrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166616.

It is not an unprimeable number, because it can be changed into a prime (166613) 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, 296 + ... + 648.

2¹⁶⁶⁶¹⁶ is an apocalyptic number.

166616 is the 236-th octagonal number.

It is an amenable number.

166616 is a deficient number, since it is larger than the sum of its proper divisors (151984).

166616 is a wasteful number, since it uses less digits than its factorization.

166616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 414 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 166616 is about 408.1862320069. The cubic root of 166616 is about 55.0265436615.

The spelling of 166616 in words is "one hundred sixty-six thousand, six hundred sixteen".