8220798513 has 8 divisors (see below), whose sum is σ = 12178960800. Its totient is φ = 5480532324.

The previous prime is 8220798503. The next prime is 8220798559. The reversal of 8220798513 is 3158970228.

It is a happy number.

It is not a de Polignac number, because 8220798513 - 2⁶ = 8220798449 is a prime.

It is a super-2 number, since 2×8220798513² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8220798503) 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, 152236983 + ... + 152237036.

It is an arithmetic number, because the mean of its divisors is an integer number (1522370100).

Almost surely, 2^8220798513 is an apocalyptic number.

It is an amenable number.

8220798513 is a deficient number, since it is larger than the sum of its proper divisors (3958162287).

8220798513 is a wasteful number, since it uses less digits than its factorization.

8220798513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304474028 (or 304474022 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 8220798513 is about 90668.6192295879. The cubic root of 8220798513 is about 2018.2331471257.

The spelling of 8220798513 in words is "eight billion, two hundred twenty million, seven hundred ninety-eight thousand, five hundred thirteen".