166332500 has 30 divisors (see below), whose sum is σ = 363741378. Its totient is φ = 66532000.

The previous prime is 166332493. The next prime is 166332503. The reversal of 166332500 is 5233661.

It can be written as a sum of positive squares in 5 ways, for example, as 21659716 + 144672784 = 4654^2 + 12028^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 166332500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166332503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 30767 + ... + 35766.

Almost surely, 2^166332500 is an apocalyptic number.

166332500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166332500 is an abundant number, since it is smaller than the sum of its proper divisors (197408878).

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

166332500 is an equidigital number, since it uses as much as digits as its factorization.

166332500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66557 (or 66540 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 166332500 is about 12896.9957742104. The cubic root of 166332500 is about 549.9531640558.

The spelling of 166332500 in words is "one hundred sixty-six million, three hundred thirty-two thousand, five hundred".