166725340 has 12 divisors (see below), whose sum is σ = 350123256. Its totient is φ = 66690128.

The previous prime is 166725289. The next prime is 166725353. The reversal of 166725340 is 43527661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 166725296 and 166725305.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 4168114 + ... + 4168153.

It is an arithmetic number, because the mean of its divisors is an integer number (29176938).

Almost surely, 2^166725340 is an apocalyptic number.

166725340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166725340 is an abundant number, since it is smaller than the sum of its proper divisors (183397916).

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

166725340 is a wasteful number, since it uses less digits than its factorization.

166725340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8336276 (or 8336274 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 166725340 is about 12912.2166958273. The cubic root of 166725340 is about 550.3857789319.

The spelling of 166725340 in words is "one hundred sixty-six million, seven hundred twenty-five thousand, three hundred forty".