6420046563 has 12 divisors (see below), whose sum is σ = 10598172208. Its totient is φ = 3668598000.

The previous prime is 6420046543. The next prime is 6420046609. The reversal of 6420046563 is 3656400246.

6420046563 is a `hidden beast` number, since 642 + 0 + 0 + 4 + 6 + 5 + 6 + 3 = 666.

It is not a de Polignac number, because 6420046563 - 2⁵ = 6420046531 is a prime.

It is a super-2 number, since 2×6420046563² = 82433995742176225938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6420046543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50952688 + ... + 50952813.

Almost surely, 2^6420046563 is an apocalyptic number.

6420046563 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6420046563 is a deficient number, since it is larger than the sum of its proper divisors (4178125645).

6420046563 is a wasteful number, since it uses less digits than its factorization.

6420046563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101905514 (or 101905511 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 6420046563 is about 80125.1930606098. The cubic root of 6420046563 is about 1858.5720109685.

The spelling of 6420046563 in words is "six billion, four hundred twenty million, forty-six thousand, five hundred sixty-three".