63540016 has 40 divisors (see below), whose sum is σ = 132045120. Its totient is φ = 29512704.

The previous prime is 63539981. The next prime is 63540017. The reversal of 63540016 is 61004536.

It is not an unprimeable number, because it can be changed into a prime (63540017) 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, 20010 + ... + 22966.

It is an arithmetic number, because the mean of its divisors is an integer number (3301128).

Almost surely, 2^63540016 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 63540016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66022560).

63540016 is an abundant number, since it is smaller than the sum of its proper divisors (68505104).

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

63540016 is a wasteful number, since it uses less digits than its factorization.

63540016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061 (or 3055 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 63540016 is about 7971.1991569650. The cubic root of 63540016 is about 399.0393949415.

The spelling of 63540016 in words is "sixty-three million, five hundred forty thousand, sixteen".