166730368 has 64 divisors (see below), whose sum is σ = 386881920. Its totient is φ = 70087680.

The previous prime is 166730363. The next prime is 166730383. The reversal of 166730368 is 863037661.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×166730368² = 55598031226830848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166730368.

It is not an unprimeable number, because it can be changed into a prime (166730363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45733 + ... + 49243.

It is an arithmetic number, because the mean of its divisors is an integer number (6045030).

Almost surely, 2^166730368 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 166730368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193440960).

166730368 is an abundant number, since it is smaller than the sum of its proper divisors (220151552).

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

166730368 is an equidigital number, since it uses as much as digits as its factorization.

166730368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 166730368 is about 12912.4113936941. The cubic root of 166730368 is about 550.3913116079.

The spelling of 166730368 in words is "one hundred sixty-six million, seven hundred thirty thousand, three hundred sixty-eight".