7220689698197 has 2 divisors, whose sum is σ = 7220689698198. Its totient is φ = 7220689698196.

The previous prime is 7220689698143. The next prime is 7220689698217. The reversal of 7220689698197 is 7918969860227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6946355732836 + 274333965361 = 2635594^2 + 523769^2 .

It is a cyclic number.

It is not a de Polignac number, because 7220689698197 - 2²⁰ = 7220688649621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7220689698097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610344849098 + 3610344849099.

It is an arithmetic number, because the mean of its divisors is an integer number (3610344849099).

Almost surely, 2^{7220689698197} is an apocalyptic number.

It is an amenable number.

7220689698197 is a deficient number, since it is larger than the sum of its proper divisors (1).

7220689698197 is an equidigital number, since it uses as much as digits as its factorization.

7220689698197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329204736, while the sum is 74.

The spelling of 7220689698197 in words is "seven trillion, two hundred twenty billion, six hundred eighty-nine million, six hundred ninety-eight thousand, one hundred ninety-seven".