63855838 has 8 divisors (see below), whose sum is σ = 97133040. Its totient is φ = 31478160.

The previous prime is 63855833. The next prime is 63855839. The reversal of 63855838 is 83855836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63855833) 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 in 3 ways as a sum of consecutive naturals, for example, 224703 + ... + 224986.

It is an arithmetic number, because the mean of its divisors is an integer number (12141630).

Almost surely, 2^63855838 is an apocalyptic number.

63855838 is a deficient number, since it is larger than the sum of its proper divisors (33277202).

63855838 is a wasteful number, since it uses less digits than its factorization.

63855838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449762.

The product of its digits is 691200, while the sum is 46.

The square root of 63855838 is about 7990.9847953804. The cubic root of 63855838 is about 399.6994367108.

The spelling of 63855838 in words is "sixty-three million, eight hundred fifty-five thousand, eight hundred thirty-eight".