8220307 has 4 divisors (see below), whose sum is σ = 8312760. Its totient is φ = 8127856.

The previous prime is 8220287. The next prime is 8220313. The reversal of 8220307 is 7030228.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8220307 - 2¹⁵ = 8187539 is a prime.

It is a Duffinian number.

8220307 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8220337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46093 + ... + 46270.

It is an arithmetic number, because the mean of its divisors is an integer number (2078190).

Almost surely, 2^8220307 is an apocalyptic number.

8220307 is a deficient number, since it is larger than the sum of its proper divisors (92453).

8220307 is an equidigital number, since it uses as much as digits as its factorization.

8220307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92452.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 8220307 is about 2867.1077761396. The cubic root of 8220307 is about 201.8192923637.

The spelling of 8220307 in words is "eight million, two hundred twenty thousand, three hundred seven".