2206807681 has 16 divisors (see below), whose sum is σ = 2408978880. Its totient is φ = 2009419200.

The previous prime is 2206807679. The next prime is 2206807699. The reversal of 2206807681 is 1867086022.

It is a cyclic number.

It is not a de Polignac number, because 2206807681 - 2¹ = 2206807679 is a prime.

It is a super-2 number, since 2×2206807681² = 9740000281841195522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2206807181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368610 + ... + 374548.

It is an arithmetic number, because the mean of its divisors is an integer number (150561180).

Almost surely, 2^2206807681 is an apocalyptic number.

It is an amenable number.

2206807681 is a deficient number, since it is larger than the sum of its proper divisors (202171199).

2206807681 is a wasteful number, since it uses less digits than its factorization.

2206807681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 2206807681 is about 46976.6716679673. The cubic root of 2206807681 is about 1301.9315824165.

The spelling of 2206807681 in words is "two billion, two hundred six million, eight hundred seven thousand, six hundred eighty-one".