63401936 has 80 divisors (see below), whose sum is σ = 142074240. Its totient is φ = 27164160.

The previous prime is 63401929. The next prime is 63401941. The reversal of 63401936 is 63910436.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240941 + ... + 241203.

It is an arithmetic number, because the mean of its divisors is an integer number (1775928).

Almost surely, 2^63401936 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 63401936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71037120).

63401936 is an abundant number, since it is smaller than the sum of its proper divisors (78672304).

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

63401936 is a wasteful number, since it uses less digits than its factorization.

63401936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 63401936 is about 7962.5332652366. The cubic root of 63401936 is about 398.7501319759.

The spelling of 63401936 in words is "sixty-three million, four hundred one thousand, nine hundred thirty-six".