2206368785 has 4 divisors (see below), whose sum is σ = 2647642548. Its totient is φ = 1765095024.

The previous prime is 2206368767. The next prime is 2206368803. The reversal of 2206368785 is 5878636022.

It is a happy number.

It is a Cunningham number, because it is equal to 46972²+1.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2206368767) and next prime (2206368803).

It can be written as a sum of positive squares in 2 ways, for example, as 794337856 + 1412030929 = 28184^2 + 37577^2 .

It is a cyclic number.

It is not a de Polignac number, because 2206368785 - 2⁶ = 2206368721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220636874 + ... + 220636883.

It is an arithmetic number, because the mean of its divisors is an integer number (661910637).

Almost surely, 2^2206368785 is an apocalyptic number.

It is an amenable number.

2206368785 is a deficient number, since it is larger than the sum of its proper divisors (441273763).

2206368785 is an equidigital number, since it uses as much as digits as its factorization.

2206368785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441273762.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 2206368785 is about 46972.0000106446. Note that the first 4 decimals coincide. The cubic root of 2206368785 is about 1301.8452661123.

The spelling of 2206368785 in words is "two billion, two hundred six million, three hundred sixty-eight thousand, seven hundred eighty-five".