63711020 has 12 divisors (see below), whose sum is σ = 133793184. Its totient is φ = 25484400.

The previous prime is 63711017. The next prime is 63711029. The reversal of 63711020 is 2011736.

It is a happy number.

63711020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3185551 = 63711020 / (6 + 3 + 7 + 1 + 1 + 0 + 2 + 0).

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 63710983 and 63711001.

It is not an unprimeable number, because it can be changed into a prime (63711029) 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 3 ways as a sum of consecutive naturals, for example, 1592756 + ... + 1592795.

It is an arithmetic number, because the mean of its divisors is an integer number (11149432).

Almost surely, 2^63711020 is an apocalyptic number.

It is an amenable number.

63711020 is an abundant number, since it is smaller than the sum of its proper divisors (70082164).

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

63711020 is a wasteful number, since it uses less digits than its factorization.

63711020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185560 (or 3185558 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 63711020 is about 7981.9183157935. The cubic root of 63711020 is about 399.3970499180.

Adding to 63711020 its reverse (2011736), we get a palindrome (65722756).

The spelling of 63711020 in words is "sixty-three million, seven hundred eleven thousand, twenty".