304656481 has 2 divisors, whose sum is σ = 304656482. Its totient is φ = 304656480.

The previous prime is 304656467. The next prime is 304656553. The reversal of 304656481 is 184656403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168584256 + 136072225 = 12984^2 + 11665^2 .

It is an emirp because it is prime and its reverse (184656403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304656481 is a prime.

It is a super-2 number, since 2×304656481² = 185631142830606722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 304656481.

It is not a weakly prime, because it can be changed into another prime (304656421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152328240 + 152328241.

It is an arithmetic number, because the mean of its divisors is an integer number (152328241).

Almost surely, 2^304656481 is an apocalyptic number.

It is an amenable number.

304656481 is a deficient number, since it is larger than the sum of its proper divisors (1).

304656481 is an equidigital number, since it uses as much as digits as its factorization.

304656481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 304656481 is about 17454.4115054046. The cubic root of 304656481 is about 672.8787406082.

The spelling of 304656481 in words is "three hundred four million, six hundred fifty-six thousand, four hundred eighty-one".