166498560 has 216 divisors, whose sum is σ = 585912600. Its totient is φ = 43646976.

The previous prime is 166498559. The next prime is 166498571. The reversal of 166498560 is 65894661.

It can be written as a sum of positive squares in 4 ways, for example, as 1016064 + 165482496 = 1008^2 + 12864^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1117366 + ... + 1117514.

Almost surely, 2^166498560 is an apocalyptic number.

166498560 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 166498560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292956300).

166498560 is an abundant number, since it is smaller than the sum of its proper divisors (419414040).

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

166498560 is a wasteful number, since it uses less digits than its factorization.

166498560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 166498560 is about 12903.4321015767. The cubic root of 166498560 is about 550.1361205784.

The spelling of 166498560 in words is "one hundred sixty-six million, four hundred ninety-eight thousand, five hundred sixty".