999086657 has 2 divisors, whose sum is σ = 999086658. Its totient is φ = 999086656.

The previous prime is 999086629. The next prime is 999086659. The reversal of 999086657 is 756680999.

999086657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 991557121 + 7529536 = 31489^2 + 2744^2 .

It is a cyclic number.

It is not a de Polignac number, because 999086657 - 2⁶ = 999086593 is a prime.

Together with 999086659, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 999086596 and 999086605.

It is not a weakly prime, because it can be changed into another prime (999086659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499543328 + 499543329.

It is an arithmetic number, because the mean of its divisors is an integer number (499543329).

Almost surely, 2^999086657 is an apocalyptic number.

It is an amenable number.

999086657 is a deficient number, since it is larger than the sum of its proper divisors (1).

999086657 is an equidigital number, since it uses as much as digits as its factorization.

999086657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The square root of 999086657 is about 31608.3320819052. The cubic root of 999086657 is about 999.6954595979.

The spelling of 999086657 in words is "nine hundred ninety-nine million, eighty-six thousand, six hundred fifty-seven".