663062461 has 2 divisors, whose sum is σ = 663062462. Its totient is φ = 663062460.

The previous prime is 663062447. The next prime is 663062471. The reversal of 663062461 is 164260366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 591997561 + 71064900 = 24331^2 + 8430^2 .

It is a cyclic number.

It is not a de Polignac number, because 663062461 - 2⁵ = 663062429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663062471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331531230 + 331531231.

It is an arithmetic number, because the mean of its divisors is an integer number (331531231).

Almost surely, 2^663062461 is an apocalyptic number.

It is an amenable number.

663062461 is a deficient number, since it is larger than the sum of its proper divisors (1).

663062461 is an equidigital number, since it uses as much as digits as its factorization.

663062461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 663062461 is about 25749.9992427184. Note that the first 3 decimals coincide. The cubic root of 663062461 is about 872.0033373361.

The spelling of 663062461 in words is "six hundred sixty-three million, sixty-two thousand, four hundred sixty-one".