63435540 has 96 divisors (see below), whose sum is σ = 205873920. Its totient is φ = 14294016.

The previous prime is 63435539. The next prime is 63435599. The reversal of 63435540 is 4553436.

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 = 63435498 and 63435507.

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, 29626 + ... + 31694.

It is an arithmetic number, because the mean of its divisors is an integer number (2144520).

Almost surely, 2^63435540 is an apocalyptic number.

63435540 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 63435540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102936960).

63435540 is an abundant number, since it is smaller than the sum of its proper divisors (142438380).

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

63435540 is a wasteful number, since it uses less digits than its factorization.

63435540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161 (or 2159 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 63435540 is about 7964.6431181818. The cubic root of 63435540 is about 398.8205674318.

Adding to 63435540 its reverse (4553436), we get a palindrome (67988976).

The spelling of 63435540 in words is "sixty-three million, four hundred thirty-five thousand, five hundred forty".