63130820 has 12 divisors (see below), whose sum is σ = 132574764. Its totient is φ = 25252320.

The previous prime is 63130819. The next prime is 63130829. The reversal of 63130820 is 2803136.

It can be written as a sum of positive squares in 2 ways, for example, as 10394176 + 52736644 = 3224^2 + 7262^2 .

It is not an unprimeable number, because it can be changed into a prime (63130829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578251 + ... + 1578290.

It is an arithmetic number, because the mean of its divisors is an integer number (11047897).

Almost surely, 2^63130820 is an apocalyptic number.

It is an amenable number.

63130820 is an abundant number, since it is smaller than the sum of its proper divisors (69443944).

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

63130820 is a wasteful number, since it uses less digits than its factorization.

63130820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156550 (or 3156548 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 63130820 is about 7945.4905449569. The cubic root of 63130820 is about 398.1809485023.

Adding to 63130820 its reverse (2803136), we get a palindrome (65933956).

The spelling of 63130820 in words is "sixty-three million, one hundred thirty thousand, eight hundred twenty".