654475009 has 2 divisors, whose sum is σ = 654475010. Its totient is φ = 654475008.

The previous prime is 654474949. The next prime is 654475021. The reversal of 654475009 is 900574456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654080625 + 394384 = 25575^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 654475009 - 2²⁵ = 620920577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654475049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327237504 + 327237505.

It is an arithmetic number, because the mean of its divisors is an integer number (327237505).

Almost surely, 2^654475009 is an apocalyptic number.

It is an amenable number.

654475009 is a deficient number, since it is larger than the sum of its proper divisors (1).

654475009 is an equidigital number, since it uses as much as digits as its factorization.

654475009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 654475009 is about 25582.7091802256. The cubic root of 654475009 is about 868.2224723868. Note that the first 3 decimals are identical.

The spelling of 654475009 in words is "six hundred fifty-four million, four hundred seventy-five thousand, nine".