68285563 has 4 divisors (see below), whose sum is σ = 71879560. Its totient is φ = 64691568.

The previous prime is 68285533. The next prime is 68285573. The reversal of 68285563 is 36558286.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36558286 = 2 ⋅18279143.

It is a cyclic number.

It is not a de Polignac number, because 68285563 - 2⁵ = 68285531 is a prime.

It is a super-2 number, since 2×68285563² = 9325836228453938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68285513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1796970 + ... + 1797007.

It is an arithmetic number, because the mean of its divisors is an integer number (17969890).

Almost surely, 2^68285563 is an apocalyptic number.

68285563 is a deficient number, since it is larger than the sum of its proper divisors (3593997).

68285563 is a wasteful number, since it uses less digits than its factorization.

68285563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593996.

The product of its digits is 345600, while the sum is 43.

The square root of 68285563 is about 8263.5079112929. The cubic root of 68285563 is about 408.7360699396.

The spelling of 68285563 in words is "sixty-eight million, two hundred eighty-five thousand, five hundred sixty-three".