63953360 has 20 divisors (see below), whose sum is σ = 148691748. Its totient is φ = 25581312.

The previous prime is 63953359. The next prime is 63953387. The reversal of 63953360 is 6335936.

It can be written as a sum of positive squares in 2 ways, for example, as 39589264 + 24364096 = 6292^2 + 4936^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 63953360.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399629 + ... + 399788.

Almost surely, 2^63953360 is an apocalyptic number.

It is an amenable number.

63953360 is an abundant number, since it is smaller than the sum of its proper divisors (84738388).

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

63953360 is a wasteful number, since it uses less digits than its factorization.

63953360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799430 (or 799424 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 35.

The square root of 63953360 is about 7997.0844687298. The cubic root of 63953360 is about 399.9028097204.

The spelling of 63953360 in words is "sixty-three million, nine hundred fifty-three thousand, three hundred sixty".