63130821 has 8 divisors (see below), whose sum is σ = 90649440. Its totient is φ = 38849712.

The previous prime is 63130819. The next prime is 63130829. The reversal of 63130821 is 12803136.

63130821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63130821 - 2¹ = 63130819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63130791 and 63130800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63130829) 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 7 ways as a sum of consecutive naturals, for example, 809331 + ... + 809408.

It is an arithmetic number, because the mean of its divisors is an integer number (11331180).

Almost surely, 2^63130821 is an apocalyptic number.

It is an amenable number.

63130821 is a deficient number, since it is larger than the sum of its proper divisors (27518619).

63130821 is a wasteful number, since it uses less digits than its factorization.

63130821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618755.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 63130821 is about 7945.4906078857. The cubic root of 63130821 is about 398.1809506048.

Adding to 63130821 its reverse (12803136), we get a palindrome (75933957).

The spelling of 63130821 in words is "sixty-three million, one hundred thirty thousand, eight hundred twenty-one".