166640100 has 72 divisors (see below), whose sum is σ = 525987168. Its totient is φ = 40396800.

The previous prime is 166640099. The next prime is 166640101. The reversal of 166640100 is 1046661.

166640100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166640099) and next prime (166640101).

It is not an unprimeable number, because it can be changed into a prime (166640101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21949 + ... + 28548.

Almost surely, 2^166640100 is an apocalyptic number.

166640100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166640100 is an abundant number, since it is smaller than the sum of its proper divisors (359347068).

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

166640100 is a wasteful number, since it uses less digits than its factorization.

166640100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50525 (or 50518 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 166640100 is about 12908.9155237766. The cubic root of 166640100 is about 550.2919661951.

Adding to 166640100 its reverse (1046661), we get a palindrome (167686761).

The spelling of 166640100 in words is "one hundred sixty-six million, six hundred forty thousand, one hundred".