166563132 has 12 divisors (see below), whose sum is σ = 388647336. Its totient is φ = 55521040.

The previous prime is 166563121. The next prime is 166563143. The reversal of 166563132 is 231365661.

It is an interprime number because it is at equal distance from previous prime (166563121) and next prime (166563143).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 166563093 and 166563102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6940119 + ... + 6940142.

It is an arithmetic number, because the mean of its divisors is an integer number (32387278).

Almost surely, 2^166563132 is an apocalyptic number.

166563132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166563132 is an abundant number, since it is smaller than the sum of its proper divisors (222084204).

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

166563132 is a wasteful number, since it uses less digits than its factorization.

166563132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13880268 (or 13880266 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 166563132 is about 12905.9339840246. The cubic root of 166563132 is about 550.2072298988.

The spelling of 166563132 in words is "one hundred sixty-six million, five hundred sixty-three thousand, one hundred thirty-two".