8220807 has 12 divisors (see below), whose sum is σ = 13570960. Its totient is φ = 4697568.

The previous prime is 8220803. The next prime is 8220851. The reversal of 8220807 is 7080228.

It is not a de Polignac number, because 8220807 - 2² = 8220803 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 (8220803) 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 11 ways as a sum of consecutive naturals, for example, 65182 + ... + 65307.

Almost surely, 2^8220807 is an apocalyptic number.

8220807 is a deficient number, since it is larger than the sum of its proper divisors (5350153).

8220807 is a wasteful number, since it uses less digits than its factorization.

8220807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130502 (or 130499 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 8220807 is about 2867.1949706987. The cubic root of 8220807 is about 201.8233841654.

The spelling of 8220807 in words is "eight million, two hundred twenty thousand, eight hundred seven".