63955408 has 40 divisors (see below), whose sum is σ = 138491136. Its totient is φ = 28358400.

The previous prime is 63955403. The next prime is 63955417. The reversal of 63955408 is 80455936.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63955403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2785 + ... + 11647.

Almost surely, 2^63955408 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 63955408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69245568).

63955408 is an abundant number, since it is smaller than the sum of its proper divisors (74535728).

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

63955408 is a wasteful number, since it uses less digits than its factorization.

63955408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923 (or 8917 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 63955408 is about 7997.2125143702. The cubic root of 63955408 is about 399.9070784156.

The spelling of 63955408 in words is "sixty-three million, nine hundred fifty-five thousand, four hundred eight".