7222216645 has 8 divisors (see below), whose sum is σ = 9904754304. Its totient is φ = 4952377104.

The previous prime is 7222216643. The next prime is 7222216649. The reversal of 7222216645 is 5466122227.

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 7222216645 - 2¹ = 7222216643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222216643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103174489 + ... + 103174558.

It is an arithmetic number, because the mean of its divisors is an integer number (1238094288).

Almost surely, 2^7222216645 is an apocalyptic number.

It is an amenable number.

7222216645 is a deficient number, since it is larger than the sum of its proper divisors (2682537659).

7222216645 is a wasteful number, since it uses less digits than its factorization.

7222216645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206349059.

The product of its digits is 80640, while the sum is 37.

The square root of 7222216645 is about 84983.6257463754. The cubic root of 7222216645 is about 1932.9628349850.

The spelling of 7222216645 in words is "seven billion, two hundred twenty-two million, two hundred sixteen thousand, six hundred forty-five".