506820168 has 24 divisors (see below), whose sum is σ = 1372638150. Its totient is φ = 168940032.

The previous prime is 506820163. The next prime is 506820179. The reversal of 506820168 is 861028605.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 486731844 + 20088324 = 22062^2 + 4482^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (506820163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3519513 + ... + 3519656.

Almost surely, 2^506820168 is an apocalyptic number.

It is an amenable number.

506820168 is an abundant number, since it is smaller than the sum of its proper divisors (865817982).

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

506820168 is a wasteful number, since it uses less digits than its factorization.

506820168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7039181 (or 7039174 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 506820168 is about 22512.6668344734. Note that the first 3 decimals coincide. The cubic root of 506820168 is about 797.2930214988.

The spelling of 506820168 in words is "five hundred six million, eight hundred twenty thousand, one hundred sixty-eight".