8654204861 has 2 divisors, whose sum is σ = 8654204862. Its totient is φ = 8654204860.

The previous prime is 8654204813. The next prime is 8654204891. The reversal of 8654204861 is 1684024568.

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., 6210385636 + 2443819225 = 78806^2 + 49435^2 .

It is a cyclic number.

It is not a de Polignac number, because 8654204861 - 2²² = 8650010557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8654204891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4327102430 + 4327102431.

It is an arithmetic number, because the mean of its divisors is an integer number (4327102431).

Almost surely, 2^8654204861 is an apocalyptic number.

It is an amenable number.

8654204861 is a deficient number, since it is larger than the sum of its proper divisors (1).

8654204861 is an equidigital number, since it uses as much as digits as its factorization.

8654204861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 368640, while the sum is 44.

The square root of 8654204861 is about 93027.9789149479. The cubic root of 8654204861 is about 2053.0950559759.

The spelling of 8654204861 in words is "eight billion, six hundred fifty-four million, two hundred four thousand, eight hundred sixty-one".