68556563 has 8 divisors (see below), whose sum is σ = 73585008. Its totient is φ = 63638784.

The previous prime is 68556517. The next prime is 68556569. The reversal of 68556563 is 36565586.

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 68556563 - 2¹⁴ = 68540179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68556569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26381 + ... + 28862.

It is an arithmetic number, because the mean of its divisors is an integer number (9198126).

Almost surely, 2^68556563 is an apocalyptic number.

68556563 is a deficient number, since it is larger than the sum of its proper divisors (5028445).

68556563 is a wasteful number, since it uses less digits than its factorization.

68556563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55333.

The product of its digits is 648000, while the sum is 44.

The square root of 68556563 is about 8279.8890693052. The cubic root of 68556563 is about 409.2760633666.

The spelling of 68556563 in words is "sixty-eight million, five hundred fifty-six thousand, five hundred sixty-three".