563439961 has 8 divisors (see below), whose sum is σ = 644545664. Its totient is φ = 482487840.

The previous prime is 563439941. The next prime is 563439967. The reversal of 563439961 is 169934365.

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

It is a cyclic number.

It is not a de Polignac number, because 563439961 - 2¹⁵ = 563407193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (563439967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30420 + ... + 45301.

It is an arithmetic number, because the mean of its divisors is an integer number (80568208).

Almost surely, 2^563439961 is an apocalyptic number.

563439961 is the 13705-th hex number.

It is an amenable number.

563439961 is a deficient number, since it is larger than the sum of its proper divisors (81105703).

563439961 is a wasteful number, since it uses less digits than its factorization.

563439961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76791.

The product of its digits is 524880, while the sum is 46.

The square root of 563439961 is about 23736.8902975937. The cubic root of 563439961 is about 825.9413612085.

The spelling of 563439961 in words is "five hundred sixty-three million, four hundred thirty-nine thousand, nine hundred sixty-one".