6463200021 has 4 divisors (see below), whose sum is σ = 8617600032. Its totient is φ = 4308800012.

The previous prime is 6463199989. The next prime is 6463200041. The reversal of 6463200021 is 1200023646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6463200021 - 2⁵ = 6463199989 is a prime.

It is a super-2 number, since 2×6463200021² = 83545909022908800882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6463199964 and 6463200000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463200041) 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, 1077200001 + ... + 1077200006.

It is an arithmetic number, because the mean of its divisors is an integer number (2154400008).

Almost surely, 2^6463200021 is an apocalyptic number.

It is an amenable number.

6463200021 is a deficient number, since it is larger than the sum of its proper divisors (2154400011).

6463200021 is a wasteful number, since it uses less digits than its factorization.

6463200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154400010.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6463200021 is about 80394.0297596781. The cubic root of 6463200021 is about 1862.7269536267.

Adding to 6463200021 its reverse (1200023646), we get a palindrome (7663223667).

The spelling of 6463200021 in words is "six billion, four hundred sixty-three million, two hundred thousand, twenty-one".