604218281 has 2 divisors, whose sum is σ = 604218282. Its totient is φ = 604218280.

The previous prime is 604218247. The next prime is 604218313. The reversal of 604218281 is 182812406.

It is a happy number.

It is an a-pointer prime, because the next prime (604218313) can be obtained adding 604218281 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496888681 + 107329600 = 22291^2 + 10360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-604218281 is a prime.

It is a super-2 number, since 2×604218281² = 730159462189189922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (604211281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302109140 + 302109141.

It is an arithmetic number, because the mean of its divisors is an integer number (302109141).

Almost surely, 2^604218281 is an apocalyptic number.

It is an amenable number.

604218281 is a deficient number, since it is larger than the sum of its proper divisors (1).

604218281 is an equidigital number, since it uses as much as digits as its factorization.

604218281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 604218281 is about 24580.8519177021. The cubic root of 604218281 is about 845.4046267738.

The spelling of 604218281 in words is "six hundred four million, two hundred eighteen thousand, two hundred eighty-one".