63005640 has 64 divisors (see below), whose sum is σ = 195125760. Its totient is φ = 16258560.

The previous prime is 63005639. The next prime is 63005647. The reversal of 63005640 is 4650036.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 63005640.

It is not an unprimeable number, because it can be changed into a prime (63005647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4749 + ... + 12188.

It is an arithmetic number, because the mean of its divisors is an integer number (3048840).

Almost surely, 2^63005640 is an apocalyptic number.

63005640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63005640 is an abundant number, since it is smaller than the sum of its proper divisors (132120120).

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

63005640 is a wasteful number, since it uses less digits than its factorization.

63005640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16982 (or 16978 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 63005640 is about 7937.6092118471. The cubic root of 63005640 is about 397.9175944473.

Adding to 63005640 its reverse (4650036), we get a palindrome (67655676).

The spelling of 63005640 in words is "sixty-three million, five thousand, six hundred forty".