63803616 has 24 divisors (see below), whose sum is σ = 167484744. Its totient is φ = 21267840.

The previous prime is 63803609. The next prime is 63803617. The reversal of 63803616 is 61630836.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63803617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332215 + ... + 332406.

It is an arithmetic number, because the mean of its divisors is an integer number (6978531).

Almost surely, 2^63803616 is an apocalyptic number.

It is an amenable number.

63803616 is an abundant number, since it is smaller than the sum of its proper divisors (103681128).

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

63803616 is a wasteful number, since it uses less digits than its factorization.

63803616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664634 (or 664626 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 63803616 is about 7987.7165698340. The cubic root of 63803616 is about 399.5904474766.

The spelling of 63803616 in words is "sixty-three million, eight hundred three thousand, six hundred sixteen".