166305632 has 36 divisors (see below), whose sum is σ = 345306780. Its totient is φ = 78625728.

The previous prime is 166305631. The next prime is 166305637. The reversal of 166305632 is 236503661.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166305631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317723 + ... + 318245.

It is an arithmetic number, because the mean of its divisors is an integer number (9591855).

Almost surely, 2^166305632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166305632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172653390).

166305632 is an abundant number, since it is smaller than the sum of its proper divisors (179001148).

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

166305632 is an frugal number, since it uses more digits than its factorization.

166305632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 544 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 166305632 is about 12895.9540942111. The cubic root of 166305632 is about 549.9235508067.

The spelling of 166305632 in words is "one hundred sixty-six million, three hundred five thousand, six hundred thirty-two".