604651009 has 2 divisors, whose sum is σ = 604651010. Its totient is φ = 604651008.

The previous prime is 604650997. The next prime is 604651031. The reversal of 604651009 is 900156406.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343731600 + 260919409 = 18540^2 + 16153^2 .

It is a cyclic number.

It is not a de Polignac number, because 604651009 - 2⁷ = 604650881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (604651049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302325504 + 302325505.

It is an arithmetic number, because the mean of its divisors is an integer number (302325505).

Almost surely, 2^604651009 is an apocalyptic number.

It is an amenable number.

604651009 is a deficient number, since it is larger than the sum of its proper divisors (1).

604651009 is an equidigital number, since it uses as much as digits as its factorization.

604651009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 604651009 is about 24589.6524782275. The cubic root of 604651009 is about 845.6063987527.

The spelling of 604651009 in words is "six hundred four million, six hundred fifty-one thousand, nine".