63730836 has 36 divisors (see below), whose sum is σ = 173490772. Its totient is φ = 19609344.

The previous prime is 63730831. The next prime is 63730837. The reversal of 63730836 is 63803736.

63730836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 43480836 + 20250000 = 6594^2 + 4500^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 63730836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63730831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67621 + ... + 68556.

Almost surely, 2^63730836 is an apocalyptic number.

It is an amenable number.

63730836 is an abundant number, since it is smaller than the sum of its proper divisors (109759936).

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

63730836 is a wasteful number, since it uses less digits than its factorization.

63730836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136200 (or 136195 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 63730836 is about 7983.1595248999. The cubic root of 63730836 is about 399.4384537000.

Subtracting 63730836 from its reverse (63803736), we obtain a square (72900 = 270²).

The spelling of 63730836 in words is "sixty-three million, seven hundred thirty thousand, eight hundred thirty-six".