563696421 has 16 divisors (see below), whose sum is σ = 796449024. Its totient is φ = 353406464.

The previous prime is 563696407. The next prime is 563696423. The reversal of 563696421 is 124696365.

It is a cyclic number.

It is not a de Polignac number, because 563696421 - 2⁷ = 563696293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563696423) 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 15 ways as a sum of consecutive naturals, for example, 72121 + ... + 79553.

It is an arithmetic number, because the mean of its divisors is an integer number (49778064).

Almost surely, 2^563696421 is an apocalyptic number.

563696421 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

563696421 is a deficient number, since it is larger than the sum of its proper divisors (232752603).

563696421 is a wasteful number, since it uses less digits than its factorization.

563696421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8940.

The product of its digits is 233280, while the sum is 42.

The square root of 563696421 is about 23742.2918228211. The cubic root of 563696421 is about 826.0666563042.

The spelling of 563696421 in words is "five hundred sixty-three million, six hundred ninety-six thousand, four hundred twenty-one".