63566040 has 128 divisors (see below), whose sum is σ = 198696960. Its totient is φ = 16257024.

The previous prime is 63566033. The next prime is 63566059. The reversal of 63566040 is 4066536.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 63565989 and 63566007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500457 + ... + 500583.

It is an arithmetic number, because the mean of its divisors is an integer number (1552320).

Almost surely, 2^63566040 is an apocalyptic number.

63566040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63566040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99348480).

63566040 is an abundant number, since it is smaller than the sum of its proper divisors (135130920).

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

63566040 is a wasteful number, since it uses less digits than its factorization.

63566040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 63566040 is about 7972.8313665849. The cubic root of 63566040 is about 399.0938655174.

The spelling of 63566040 in words is "sixty-three million, five hundred sixty-six thousand, forty".