68533563 has 24 divisors (see below), whose sum is σ = 106159872. Its totient is φ = 38524464.

The previous prime is 68533519. The next prime is 68533571. The reversal of 68533563 is 36533586.

It is not a de Polignac number, because 68533563 - 2⁶ = 68533499 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is the 8279-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (68533163) by changing a digit.

It is a nontrivial repunit in base 8278.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93906 + ... + 94632.

It is an arithmetic number, because the mean of its divisors is an integer number (4423328).

Almost surely, 2^68533563 is an apocalyptic number.

68533563 is a deficient number, since it is larger than the sum of its proper divisors (37626309).

68533563 is an equidigital number, since it uses as much as digits as its factorization.

68533563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 804 counting only the distinct ones).

The product of its digits is 194400, while the sum is 39.

The square root of 68533563 is about 8278.5000452981. The cubic root of 68533563 is about 409.2302889873.

It can be divided in two parts, 68533 and 563, that added together give a palindrome (69096).

The spelling of 68533563 in words is "sixty-eight million, five hundred thirty-three thousand, five hundred sixty-three".