63774481 has 2 divisors, whose sum is σ = 63774482. Its totient is φ = 63774480.

The previous prime is 63774467. The next prime is 63774511. The reversal of 63774481 is 18447736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59043856 + 4730625 = 7684^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 63774481 - 2⁷ = 63774353 is a prime.

It is a super-2 number, since 2×63774481² = 8134368853638722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63771481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31887240 + 31887241.

It is an arithmetic number, because the mean of its divisors is an integer number (31887241).

Almost surely, 2^63774481 is an apocalyptic number.

It is an amenable number.

63774481 is a deficient number, since it is larger than the sum of its proper divisors (1).

63774481 is an equidigital number, since it uses as much as digits as its factorization.

63774481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 63774481 is about 7985.8926238712. The cubic root of 63774481 is about 399.5296158136.

The spelling of 63774481 in words is "sixty-three million, seven hundred seventy-four thousand, four hundred eighty-one".