6820105 has 16 divisors (see below), whose sum is σ = 8481600. Its totient is φ = 5261760.

The previous prime is 6820103. The next prime is 6820109. The reversal of 6820105 is 5010286.

It is a happy number.

It is not a de Polignac number, because 6820105 - 2¹ = 6820103 is a prime.

It is a super-2 number, since 2×6820105² = 93027664422050, which contains 22 as substring.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6820103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17806 + ... + 18184.

It is an arithmetic number, because the mean of its divisors is an integer number (530100).

Almost surely, 2^6820105 is an apocalyptic number.

It is an amenable number.

6820105 is a deficient number, since it is larger than the sum of its proper divisors (1661495).

6820105 is a wasteful number, since it uses less digits than its factorization.

6820105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 6820105 is about 2611.5330746517. The cubic root of 6820105 is about 189.6401777240.

The spelling of 6820105 in words is "six million, eight hundred twenty thousand, one hundred five".