166747660 has 12 divisors (see below), whose sum is σ = 350170128. Its totient is φ = 66699056.

The previous prime is 166747621. The next prime is 166747687. The reversal of 166747660 is 66747661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4168672 + ... + 4168711.

It is an arithmetic number, because the mean of its divisors is an integer number (29180844).

Almost surely, 2^166747660 is an apocalyptic number.

166747660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166747660 is an abundant number, since it is smaller than the sum of its proper divisors (183422468).

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

166747660 is a wasteful number, since it uses less digits than its factorization.

166747660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8337392 (or 8337390 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 166747660 is about 12913.0809646652. The cubic root of 166747660 is about 550.4103384109.

Subtracting from 166747660 its reverse (66747661), we obtain a palindrome (99999999).

The spelling of 166747660 in words is "one hundred sixty-six million, seven hundred forty-seven thousand, six hundred sixty".