63445368 has 128 divisors (see below), whose sum is σ = 189987840. Its totient is φ = 17280000.

The previous prime is 63445357. The next prime is 63445373. The reversal of 63445368 is 86354436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420093 + ... + 420243.

It is an arithmetic number, because the mean of its divisors is an integer number (1484280).

Almost surely, 2^63445368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63445368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94993920).

63445368 is an abundant number, since it is smaller than the sum of its proper divisors (126542472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63445368 is a wasteful number, since it uses less digits than its factorization.

63445368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 265 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 63445368 is about 7965.2600710837. The cubic root of 63445368 is about 398.8411626487.

The spelling of 63445368 in words is "sixty-three million, four hundred forty-five thousand, three hundred sixty-eight".