166435660 has 12 divisors (see below), whose sum is σ = 349514928. Its totient is φ = 66574256.

The previous prime is 166435639. The next prime is 166435663. The reversal of 166435660 is 66534661.

It is not an unprimeable number, because it can be changed into a prime (166435663) 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, 4160872 + ... + 4160911.

It is an arithmetic number, because the mean of its divisors is an integer number (29126244).

Almost surely, 2^166435660 is an apocalyptic number.

166435660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166435660 is an abundant number, since it is smaller than the sum of its proper divisors (183079268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166435660 is a wasteful number, since it uses less digits than its factorization.

166435660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8321792 (or 8321790 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 166435660 is about 12900.9945353062. The cubic root of 166435660 is about 550.0668348532.

Subtracting from 166435660 its reverse (66534661), we obtain a palindrome (99900999).

The spelling of 166435660 in words is "one hundred sixty-six million, four hundred thirty-five thousand, six hundred sixty".