166475420 has 12 divisors (see below), whose sum is σ = 349598424. Its totient is φ = 66590160.

The previous prime is 166475411. The next prime is 166475423. The reversal of 166475420 is 24574661.

166475420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166475423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4161866 + ... + 4161905.

It is an arithmetic number, because the mean of its divisors is an integer number (29133202).

Almost surely, 2^166475420 is an apocalyptic number.

166475420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166475420 is an abundant number, since it is smaller than the sum of its proper divisors (183123004).

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

166475420 is a wasteful number, since it uses less digits than its factorization.

166475420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323780 (or 8323778 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 166475420 is about 12902.5354097557. The cubic root of 166475420 is about 550.1106333918.

The spelling of 166475420 in words is "one hundred sixty-six million, four hundred seventy-five thousand, four hundred twenty".