999000000617 has 2 divisors, whose sum is σ = 999000000618. Its totient is φ = 999000000616.

The previous prime is 999000000613. The next prime is 999000000643. The reversal of 999000000617 is 716000000999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834343403776 + 164656596841 = 913424^2 + 405779^2 .

It is a cyclic number.

It is not a de Polignac number, because 999000000617 - 2² = 999000000613 is a prime.

It is not a weakly prime, because it can be changed into another prime (999000000611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499500000308 + 499500000309.

It is an arithmetic number, because the mean of its divisors is an integer number (499500000309).

Almost surely, 2^999000000617 is an apocalyptic number.

It is an amenable number.

999000000617 is a deficient number, since it is larger than the sum of its proper divisors (1).

999000000617 is an equidigital number, since it uses as much as digits as its factorization.

999000000617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 41.

The spelling of 999000000617 in words is "nine hundred ninety-nine billion, six hundred seventeen", and thus it is an aban number.