63436530 has 64 divisors (see below), whose sum is σ = 160807680. Its totient is φ = 15983616.

The previous prime is 63436519. The next prime is 63436531. The reversal of 63436530 is 3563436.

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

It is not an unprimeable number, because it can be changed into a prime (63436531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60894 + ... + 61926.

It is an arithmetic number, because the mean of its divisors is an integer number (2512620).

Almost surely, 2^63436530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63436530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80403840).

63436530 is an abundant number, since it is smaller than the sum of its proper divisors (97371150).

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

63436530 is a wasteful number, since it uses less digits than its factorization.

63436530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 63436530 is about 7964.7052676166. The cubic root of 63436530 is about 398.8226421379.

Adding to 63436530 its reverse (3563436), we get a palindrome (66999966).

The spelling of 63436530 in words is "sixty-three million, four hundred thirty-six thousand, five hundred thirty".