166344620 has 96 divisors (see below), whose sum is σ = 400404480. Its totient is φ = 57542400.

The previous prime is 166344599. The next prime is 166344623. The reversal of 166344620 is 26443661.

166344620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (166344623) 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, 745829 + ... + 746051.

It is an arithmetic number, because the mean of its divisors is an integer number (4170880).

Almost surely, 2^166344620 is an apocalyptic number.

166344620 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 166344620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200202240).

166344620 is an abundant number, since it is smaller than the sum of its proper divisors (234059860).

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

166344620 is a wasteful number, since it uses less digits than its factorization.

166344620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 413 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 166344620 is about 12897.4656425206. The cubic root of 166344620 is about 549.9665213782.

The spelling of 166344620 in words is "one hundred sixty-six million, three hundred forty-four thousand, six hundred twenty".