63891301 has 2 divisors, whose sum is σ = 63891302. Its totient is φ = 63891300.

The previous prime is 63891293. The next prime is 63891343. The reversal of 63891301 is 10319836.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 22944100 = 6399^2 + 4790^2 .

It is a cyclic number.

It is not a de Polignac number, because 63891301 - 2³ = 63891293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63891101) 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, 31945650 + 31945651.

It is an arithmetic number, because the mean of its divisors is an integer number (31945651).

Almost surely, 2^63891301 is an apocalyptic number.

It is an amenable number.

63891301 is a deficient number, since it is larger than the sum of its proper divisors (1).

63891301 is an equidigital number, since it uses as much as digits as its factorization.

63891301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 63891301 is about 7993.2034254109. The cubic root of 63891301 is about 399.7734154228.

The spelling of 63891301 in words is "sixty-three million, eight hundred ninety-one thousand, three hundred one".