6864198469 has 2 divisors, whose sum is σ = 6864198470. Its totient is φ = 6864198468.

The previous prime is 6864198431. The next prime is 6864198479. The reversal of 6864198469 is 9648914686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6833006244 + 31192225 = 82662^2 + 5585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6864198469 is a prime.

It is a super-2 number, since 2×6864198469² = 94234441243643887922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6864198479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3432099234 + 3432099235.

It is an arithmetic number, because the mean of its divisors is an integer number (3432099235).

Almost surely, 2^6864198469 is an apocalyptic number.

It is an amenable number.

6864198469 is a deficient number, since it is larger than the sum of its proper divisors (1).

6864198469 is an equidigital number, since it uses as much as digits as its factorization.

6864198469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 61.

The square root of 6864198469 is about 82850.4584718757. The cubic root of 6864198469 is about 1900.4798851558.

The spelling of 6864198469 in words is "six billion, eight hundred sixty-four million, one hundred ninety-eight thousand, four hundred sixty-nine".