63353381 has 16 divisors (see below), whose sum is σ = 78161664. Its totient is φ = 50004864.

The previous prime is 63353377. The next prime is 63353387. The reversal of 63353381 is 18335336.

63353381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63353381 - 2² = 63353377 is a prime.

It is a super-2 number, since 2×63353381² = 8027301768262322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63353387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67145 + ... + 68081.

It is an arithmetic number, because the mean of its divisors is an integer number (4885104).

Almost surely, 2^63353381 is an apocalyptic number.

It is an amenable number.

63353381 is a deficient number, since it is larger than the sum of its proper divisors (14808283).

63353381 is a wasteful number, since it uses less digits than its factorization.

63353381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its digits is 19440, while the sum is 32.

The square root of 63353381 is about 7959.4837144126. The cubic root of 63353381 is about 398.6483145947.

The spelling of 63353381 in words is "sixty-three million, three hundred fifty-three thousand, three hundred eighty-one".