820327161 has 8 divisors (see below), whose sum is σ = 1094070240. Its totient is φ = 546734432.

The previous prime is 820327159. The next prime is 820327187. The reversal of 820327161 is 161723028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 820327161 - 2¹ = 820327159 is a prime.

It is a super-3 number, since 3×820327161³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (820327121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24171 + ... + 47168.

It is an arithmetic number, because the mean of its divisors is an integer number (136758780).

Almost surely, 2^820327161 is an apocalyptic number.

It is an amenable number.

820327161 is a deficient number, since it is larger than the sum of its proper divisors (273743079).

820327161 is a wasteful number, since it uses less digits than its factorization.

820327161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75175.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 820327161 is about 28641.3540357295. The cubic root of 820327161 is about 936.1146252254.

The spelling of 820327161 in words is "eight hundred twenty million, three hundred twenty-seven thousand, one hundred sixty-one".