166061650 has 12 divisors (see below), whose sum is σ = 308874762. Its totient is φ = 66424640.

The previous prime is 166061617. The next prime is 166061659. The reversal of 166061650 is 56160661.

It can be written as a sum of positive squares in 3 ways, for example, as 105206049 + 60855601 = 10257^2 + 7801^2 .

It is not an unprimeable number, because it can be changed into a prime (166061659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1660567 + ... + 1660666.

Almost surely, 2^166061650 is an apocalyptic number.

166061650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166061650 is a deficient number, since it is larger than the sum of its proper divisors (142813112).

166061650 is a wasteful number, since it uses less digits than its factorization.

166061650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321245 (or 3321240 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 166061650 is about 12886.4909886284. The cubic root of 166061650 is about 549.6544937446.

The spelling of 166061650 in words is "one hundred sixty-six million, sixty-one thousand, six hundred fifty".