166507660 has 24 divisors (see below), whose sum is σ = 381454416. Its totient is φ = 60548160.

The previous prime is 166507619. The next prime is 166507661. The reversal of 166507660 is 66705661.

It is a happy number.

166507660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166507661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378207 + ... + 378646.

It is an arithmetic number, because the mean of its divisors is an integer number (15893934).

Almost surely, 2^166507660 is an apocalyptic number.

166507660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166507660 is an abundant number, since it is smaller than the sum of its proper divisors (214946756).

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

166507660 is a wasteful number, since it uses less digits than its factorization.

166507660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756873 (or 756871 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 166507660 is about 12903.7847161211. The cubic root of 166507660 is about 550.1461429824.

It can be divided in two parts, 16650 and 7660, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 166507660 in words is "one hundred sixty-six million, five hundred seven thousand, six hundred sixty".