166207020 has 72 divisors (see below), whose sum is σ = 541369584. Its totient is φ = 37989504.

The previous prime is 166206991. The next prime is 166207043. The reversal of 166207020 is 20702661.

It is a happy number.

166207020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25327 + ... + 31206.

It is an arithmetic number, because the mean of its divisors is an integer number (7519022).

Almost surely, 2^166207020 is an apocalyptic number.

166207020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166207020 is an abundant number, since it is smaller than the sum of its proper divisors (375162564).

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

166207020 is a wasteful number, since it uses less digits than its factorization.

166207020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56559 (or 56550 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 166207020 is about 12892.1301575806. The cubic root of 166207020 is about 549.8148357408.

Adding to 166207020 its reverse (20702661), we get a palindrome (186909681).

The spelling of 166207020 in words is "one hundred sixty-six million, two hundred seven thousand, twenty".