2206650721 has 8 divisors (see below), whose sum is σ = 2412482688. Its totient is φ = 2001690000.

The previous prime is 2206650713. The next prime is 2206650739. The reversal of 2206650721 is 1270566022.

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 2206650721 - 2³ = 2206650713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2206650421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212505 + ... + 222646.

It is an arithmetic number, because the mean of its divisors is an integer number (301560336).

Almost surely, 2^2206650721 is an apocalyptic number.

It is an amenable number.

2206650721 is a deficient number, since it is larger than the sum of its proper divisors (205831967).

2206650721 is a wasteful number, since it uses less digits than its factorization.

2206650721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435623.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2206650721 is about 46975.0010218201. The cubic root of 2206650721 is about 1301.9007148987.

The spelling of 2206650721 in words is "two billion, two hundred six million, six hundred fifty thousand, seven hundred twenty-one".