63020081 has 2 divisors, whose sum is σ = 63020082. Its totient is φ = 63020080.

The previous prime is 63020077. The next prime is 63020101. The reversal of 63020081 is 18002036.

It is an a-pointer prime, because the next prime (63020101) can be obtained adding 63020081 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48427681 + 14592400 = 6959^2 + 3820^2 .

It is a cyclic number.

It is not a de Polignac number, because 63020081 - 2² = 63020077 is a prime.

It is a super-2 number, since 2×63020081² = 7943061218493122, which contains 22 as substring.

It is equal to p_3730430 and since 63020081 and 3730430 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (63020281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31510040 + 31510041.

It is an arithmetic number, because the mean of its divisors is an integer number (31510041).

Almost surely, 2^63020081 is an apocalyptic number.

It is an amenable number.

63020081 is a deficient number, since it is larger than the sum of its proper divisors (1).

63020081 is an equidigital number, since it uses as much as digits as its factorization.

63020081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 63020081 is about 7938.5188165048. The cubic root of 63020081 is about 397.9479932551.

The spelling of 63020081 in words is "sixty-three million, twenty thousand, eighty-one".