166563000 has 256 divisors, whose sum is σ = 599040000. Its totient is φ = 42768000.

The previous prime is 166562993. The next prime is 166563013. The reversal of 166563000 is 365661.

166563000 is a `hidden beast` number, since 1 + 6 + 656 + 3 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 15.

It is a congruent number.

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, 836901 + ... + 837099.

It is an arithmetic number, because the mean of its divisors is an integer number (2340000).

Almost surely, 2^166563000 is an apocalyptic number.

166563000 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 166563000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299520000).

166563000 is an abundant number, since it is smaller than the sum of its proper divisors (432477000).

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

166563000 is a wasteful number, since it uses less digits than its factorization.

166563000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 166563000 is about 12905.9288700969. The cubic root of 166563000 is about 550.2070845537.

The spelling of 166563000 in words is "one hundred sixty-six million, five hundred sixty-three thousand".