8820197807 has 2 divisors, whose sum is σ = 8820197808. Its totient is φ = 8820197806.

The previous prime is 8820197747. The next prime is 8820197821. The reversal of 8820197807 is 7087910288.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8820197807 - 2²⁶ = 8753088943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8820194807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410098903 + 4410098904.

It is an arithmetic number, because the mean of its divisors is an integer number (4410098904).

Almost surely, 2^8820197807 is an apocalyptic number.

8820197807 is a deficient number, since it is larger than the sum of its proper divisors (1).

8820197807 is an equidigital number, since it uses as much as digits as its factorization.

8820197807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 50.

The square root of 8820197807 is about 93915.9081678924. The cubic root of 8820197807 is about 2066.1385538924.

The spelling of 8820197807 in words is "eight billion, eight hundred twenty million, one hundred ninety-seven thousand, eight hundred seven".