166545260 has 192 divisors, whose sum is σ = 464486400. Its totient is φ = 48771072.

The previous prime is 166545257. The next prime is 166545307. The reversal of 166545260 is 62545661.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 166545260.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1311317 + ... + 1311443.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 2^166545260 is an apocalyptic number.

166545260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166545260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232243200).

166545260 is an abundant number, since it is smaller than the sum of its proper divisors (297941140).

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

166545260 is a wasteful number, since it uses less digits than its factorization.

166545260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 166545260 is about 12905.2415707727. The cubic root of 166545260 is about 550.1875503630.

The spelling of 166545260 in words is "one hundred sixty-six million, five hundred forty-five thousand, two hundred sixty".