999654697 has 2 divisors, whose sum is σ = 999654698. Its totient is φ = 999654696.

The previous prime is 999654647. The next prime is 999654701. The reversal of 999654697 is 796456999.

999654697 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., 994708521 + 4946176 = 31539^2 + 2224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999654697 is a prime.

It is not a weakly prime, because it can be changed into another prime (999654637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499827348 + 499827349.

It is an arithmetic number, because the mean of its divisors is an integer number (499827349).

Almost surely, 2^999654697 is an apocalyptic number.

It is an amenable number.

999654697 is a deficient number, since it is larger than the sum of its proper divisors (1).

999654697 is an equidigital number, since it uses as much as digits as its factorization.

999654697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33067440, while the sum is 64.

The square root of 999654697 is about 31617.3164104735. The cubic root of 999654697 is about 999.8848857492.

The spelling of 999654697 in words is "nine hundred ninety-nine million, six hundred fifty-four thousand, six hundred ninety-seven".