166518260 has 24 divisors (see below), whose sum is σ = 350065800. Its totient is φ = 66535424.

The previous prime is 166518259. The next prime is 166518307. The reversal of 166518260 is 62815661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 103347556 + 63170704 = 10166^2 + 7948^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166518260.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17012 + ... + 24948.

It is an arithmetic number, because the mean of its divisors is an integer number (14586075).

Almost surely, 2^166518260 is an apocalyptic number.

166518260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166518260 is an abundant number, since it is smaller than the sum of its proper divisors (183547540).

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

166518260 is a wasteful number, since it uses less digits than its factorization.

166518260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8995 (or 8993 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 166518260 is about 12904.1954417933. The cubic root of 166518260 is about 550.1578169706.

The spelling of 166518260 in words is "one hundred sixty-six million, five hundred eighteen thousand, two hundred sixty".