8242220669 has 8 divisors (see below), whose sum is σ = 8339619960. Its totient is φ = 8144928000.

The previous prime is 8242220621. The next prime is 8242220671. The reversal of 8242220669 is 9660222428.

8242220669 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45091225 + 8197129444 = 6715^2 + 90538^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8242220669 is a prime.

It is a super-2 number, since 2×8242220669² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8242220369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134579 + ... + 185999.

It is an arithmetic number, because the mean of its divisors is an integer number (1042452495).

Almost surely, 2^8242220669 is an apocalyptic number.

8242220669 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

8242220669 is a deficient number, since it is larger than the sum of its proper divisors (97399291).

8242220669 is a wasteful number, since it uses less digits than its factorization.

8242220669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53311.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 8242220669 is about 90786.6767152538. The cubic root of 8242220669 is about 2019.9846965641.

The spelling of 8242220669 in words is "eight billion, two hundred forty-two million, two hundred twenty thousand, six hundred sixty-nine".