604877681 has 2 divisors, whose sum is σ = 604877682. Its totient is φ = 604877680.

The previous prime is 604877579. The next prime is 604877683. The reversal of 604877681 is 186778406.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335622400 + 269255281 = 18320^2 + 16409^2 .

It is a cyclic number.

It is not a de Polignac number, because 604877681 - 2¹⁴ = 604861297 is a prime.

It is a super-2 number, since 2×604877681² = 731754017943875522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 604877683, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (604877683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302438840 + 302438841.

It is an arithmetic number, because the mean of its divisors is an integer number (302438841).

Almost surely, 2^604877681 is an apocalyptic number.

It is an amenable number.

604877681 is a deficient number, since it is larger than the sum of its proper divisors (1).

604877681 is an equidigital number, since it uses as much as digits as its factorization.

604877681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 604877681 is about 24594.2611395423. The cubic root of 604877681 is about 845.7120527272.

The spelling of 604877681 in words is "six hundred four million, eight hundred seventy-seven thousand, six hundred eighty-one".