166540260 has 48 divisors (see below), whose sum is σ = 466937856. Its totient is φ = 44351232.

The previous prime is 166540207. The next prime is 166540267. The reversal of 166540260 is 62045661.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (166540267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60637 + ... + 63323.

It is an arithmetic number, because the mean of its divisors is an integer number (9727872).

Almost surely, 2^166540260 is an apocalyptic number.

166540260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166540260 is an abundant number, since it is smaller than the sum of its proper divisors (300397596).

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

166540260 is a wasteful number, since it uses less digits than its factorization.

166540260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 166540260 is about 12905.0478495820. The cubic root of 166540260 is about 550.1820444217.

The spelling of 166540260 in words is "one hundred sixty-six million, five hundred forty thousand, two hundred sixty".