8664867859 has 2 divisors, whose sum is σ = 8664867860. Its totient is φ = 8664867858.

The previous prime is 8664867851. The next prime is 8664867923. The reversal of 8664867859 is 9587684668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8664867859 - 2³ = 8664867851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8664867794 and 8664867803.

It is not a weakly prime, because it can be changed into another prime (8664867851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4332433929 + 4332433930.

It is an arithmetic number, because the mean of its divisors is an integer number (4332433930).

Almost surely, 2^8664867859 is an apocalyptic number.

8664867859 is a deficient number, since it is larger than the sum of its proper divisors (1).

8664867859 is an equidigital number, since it uses as much as digits as its factorization.

8664867859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139345920, while the sum is 67.

The square root of 8664867859 is about 93085.2719768278. The cubic root of 8664867859 is about 2053.9379280727.

The spelling of 8664867859 in words is "eight billion, six hundred sixty-four million, eight hundred sixty-seven thousand, eight hundred fifty-nine".