600161220 has 72 divisors (see below), whose sum is σ = 1831107096. Its totient is φ = 159109632.

The previous prime is 600161179. The next prime is 600161267. The reversal of 600161220 is 22161006.

It is a happy number.

600161220 is a `hidden beast` number, since 600 + 1 + 61 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 213802884 + 386358336 = 14622^2 + 19656^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 600161193 and 600161202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21504 + ... + 40776.

It is an arithmetic number, because the mean of its divisors is an integer number (25432043).

Almost surely, 2^600161220 is an apocalyptic number.

600161220 is a gapful number since it is divisible by the number (60) 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 600161220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915553548).

600161220 is an abundant number, since it is smaller than the sum of its proper divisors (1230945876).

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

600161220 is a wasteful number, since it uses less digits than its factorization.

600161220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19461 (or 19456 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 600161220 is about 24498.1880962654. The cubic root of 600161220 is about 843.5082019890.

The spelling of 600161220 in words is "six hundred million, one hundred sixty-one thousand, two hundred twenty".