63438408 has 96 divisors (see below), whose sum is σ = 188922240. Its totient is φ = 19071360.

The previous prime is 63438337. The next prime is 63438409. The reversal of 63438408 is 80483436.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (63438409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136785 + ... + 137247.

It is an arithmetic number, because the mean of its divisors is an integer number (1967940).

Almost surely, 2^63438408 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 63438408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94461120).

63438408 is an abundant number, since it is smaller than the sum of its proper divisors (125483832).

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

63438408 is a wasteful number, since it uses less digits than its factorization.

63438408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 63438408 is about 7964.8231618787. The cubic root of 63438408 is about 398.8265777332.

The spelling of 63438408 in words is "sixty-three million, four hundred thirty-eight thousand, four hundred eight".