166652020 has 96 divisors (see below), whose sum is σ = 392345856. Its totient is φ = 59136000.

The previous prime is 166651999. The next prime is 166652023. The reversal of 166652020 is 20256661.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 166652020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166652023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 789715 + ... + 789925.

It is an arithmetic number, because the mean of its divisors is an integer number (4086936).

Almost surely, 2^166652020 is an apocalyptic number.

166652020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166652020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196172928).

166652020 is an abundant number, since it is smaller than the sum of its proper divisors (225693836).

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

166652020 is a wasteful number, since it uses less digits than its factorization.

166652020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 166652020 is about 12909.3772119340. The cubic root of 166652020 is about 550.3050869343.

The spelling of 166652020 in words is "one hundred sixty-six million, six hundred fifty-two thousand, twenty".