8864198257 has 2 divisors, whose sum is σ = 8864198258. Its totient is φ = 8864198256.

The previous prime is 8864198197. The next prime is 8864198263. The reversal of 8864198257 is 7528914688.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7308369121 + 1555829136 = 85489^2 + 39444^2 .

It is a cyclic number.

It is not a de Polignac number, because 8864198257 - 2¹⁵ = 8864165489 is a prime.

It is not a weakly prime, because it can be changed into another prime (8864198297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4432099128 + 4432099129.

It is an arithmetic number, because the mean of its divisors is an integer number (4432099129).

Almost surely, 2^8864198257 is an apocalyptic number.

It is an amenable number.

8864198257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8864198257 is an equidigital number, since it uses as much as digits as its factorization.

8864198257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 58.

The square root of 8864198257 is about 94149.8712532311. The cubic root of 8864198257 is about 2069.5685703442.

The spelling of 8864198257 in words is "eight billion, eight hundred sixty-four million, one hundred ninety-eight thousand, two hundred fifty-seven".