8220635117 has 2 divisors, whose sum is σ = 8220635118. Its totient is φ = 8220635116.

The previous prime is 8220635113. The next prime is 8220635147. The reversal of 8220635117 is 7115360228.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6384169801 + 1836465316 = 79901^2 + 42854^2 .

It is a cyclic number.

It is not a de Polignac number, because 8220635117 - 2² = 8220635113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8220635113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110317558 + 4110317559.

It is an arithmetic number, because the mean of its divisors is an integer number (4110317559).

Almost surely, 2^8220635117 is an apocalyptic number.

It is an amenable number.

8220635117 is a deficient number, since it is larger than the sum of its proper divisors (1).

8220635117 is an equidigital number, since it uses as much as digits as its factorization.

8220635117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 8220635117 is about 90667.7181636331. The cubic root of 8220635117 is about 2018.2197756181.

The spelling of 8220635117 in words is "eight billion, two hundred twenty million, six hundred thirty-five thousand, one hundred seventeen".