63798281 has 2 divisors, whose sum is σ = 63798282. Its totient is φ = 63798280.

The previous prime is 63798269. The next prime is 63798299. The reversal of 63798281 is 18289736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50410000 + 13388281 = 7100^2 + 3659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63798281 is a prime.

It is a super-2 number, since 2×63798281² = 8140441317109922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (63798211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31899140 + 31899141.

It is an arithmetic number, because the mean of its divisors is an integer number (31899141).

Almost surely, 2^63798281 is an apocalyptic number.

It is an amenable number.

63798281 is a deficient number, since it is larger than the sum of its proper divisors (1).

63798281 is an equidigital number, since it uses as much as digits as its factorization.

63798281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 63798281 is about 7987.3826125959. The cubic root of 63798281 is about 399.5793097878.

The spelling of 63798281 in words is "sixty-three million, seven hundred ninety-eight thousand, two hundred eighty-one".