2106206065 has 8 divisors (see below), whose sum is σ = 2581223040. Its totient is φ = 1649114352.

The previous prime is 2106206033. The next prime is 2106206077. The reversal of 2106206065 is 5606026012.

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 2106206065 - 2⁵ = 2106206033 is a prime.

It is a super-2 number, since 2×2106206065² = 8872207976485568450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4481055 + ... + 4481524.

It is an arithmetic number, because the mean of its divisors is an integer number (322652880).

Almost surely, 2^2106206065 is an apocalyptic number.

It is an amenable number.

2106206065 is a deficient number, since it is larger than the sum of its proper divisors (475016975).

2106206065 is an equidigital number, since it uses as much as digits as its factorization.

2106206065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8962631.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2106206065 is about 45893.4207158281. The cubic root of 2106206065 is about 1281.8394096707.

The spelling of 2106206065 in words is "two billion, one hundred six million, two hundred six thousand, sixty-five".