63540560 has 80 divisors (see below), whose sum is σ = 164721600. Its totient is φ = 22652928.

The previous prime is 63540553. The next prime is 63540583. The reversal of 63540560 is 6504536.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×63540560² = 8074805530227200, which contains 22 as substring.

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, 24611 + ... + 27069.

It is an arithmetic number, because the mean of its divisors is an integer number (2059020).

Almost surely, 2^63540560 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 63540560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82360800).

63540560 is an abundant number, since it is smaller than the sum of its proper divisors (101181040).

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

63540560 is a wasteful number, since it uses less digits than its factorization.

63540560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 63540560 is about 7971.2332797378. The cubic root of 63540560 is about 399.0405337347.

The spelling of 63540560 in words is "sixty-three million, five hundred forty thousand, five hundred sixty".