63330881 has 2 divisors, whose sum is σ = 63330882. Its totient is φ = 63330880.

The previous prime is 63330877. The next prime is 63330901. The reversal of 63330881 is 18803336.

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., 61481281 + 1849600 = 7841^2 + 1360^2 .

It is a cyclic number.

It is not a de Polignac number, because 63330881 - 2² = 63330877 is a prime.

It is a super-2 number, since 2×63330881² = 8021600976472322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (63330821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31665440 + 31665441.

It is an arithmetic number, because the mean of its divisors is an integer number (31665441).

Almost surely, 2^63330881 is an apocalyptic number.

It is an amenable number.

63330881 is a deficient number, since it is larger than the sum of its proper divisors (1).

63330881 is an equidigital number, since it uses as much as digits as its factorization.

63330881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 63330881 is about 7958.0701806405. The cubic root of 63330881 is about 398.6011155924.

The spelling of 63330881 in words is "sixty-three million, three hundred thirty thousand, eight hundred eighty-one".