281480663 has 2 divisors, whose sum is σ = 281480664. Its totient is φ = 281480662.

The previous prime is 281480653. The next prime is 281480701. The reversal of 281480663 is 366084182.

It is a happy number.

It is an a-pointer prime, because the next prime (281480701) can be obtained adding 281480663 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281480663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281480653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140740331 + 140740332.

It is an arithmetic number, because the mean of its divisors is an integer number (140740332).

Almost surely, 2^281480663 is an apocalyptic number.

281480663 is a deficient number, since it is larger than the sum of its proper divisors (1).

281480663 is an equidigital number, since it uses as much as digits as its factorization.

281480663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 281480663 is about 16777.3854637724. The cubic root of 281480663 is about 655.3644131116.

The spelling of 281480663 in words is "two hundred eighty-one million, four hundred eighty thousand, six hundred sixty-three".