820106 has 8 divisors (see below), whose sum is σ = 1405920. Its totient is φ = 351468.

The previous prime is 820093. The next prime is 820109. The reversal of 820106 is 601028.

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

It is not an unprimeable number, because it can be changed into a prime (820109) by changing a digit.

820106 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29276 + ... + 29303.

It is an arithmetic number, because the mean of its divisors is an integer number (175740).

2⁸²⁰¹⁰⁶ is an apocalyptic number.

820106 is a deficient number, since it is larger than the sum of its proper divisors (585814).

820106 is a wasteful number, since it uses less digits than its factorization.

820106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58588.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 820106 is about 905.5970406312. The cubic root of 820106 is about 93.6030491860.

The spelling of 820106 in words is "eight hundred twenty thousand, one hundred six".