68565481 has 4 divisors (see below), whose sum is σ = 69531264. Its totient is φ = 67599700.

The previous prime is 68565449. The next prime is 68565499. The reversal of 68565481 is 18456586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68565481 - 2⁵ = 68565449 is a prime.

It is a super-2 number, since 2×68565481² = 9402450369522722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68565401) 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 3 ways as a sum of consecutive naturals, for example, 482785 + ... + 482926.

It is an arithmetic number, because the mean of its divisors is an integer number (17382816).

Almost surely, 2^68565481 is an apocalyptic number.

It is an amenable number.

68565481 is a deficient number, since it is larger than the sum of its proper divisors (965783).

68565481 is an equidigital number, since it uses as much as digits as its factorization.

68565481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965782.

The product of its digits is 230400, while the sum is 43.

The square root of 68565481 is about 8280.4275855779. The cubic root of 68565481 is about 409.2938091302.

It can be divided in two parts, 685 and 65481, that added together give a palindrome (66166).

The spelling of 68565481 in words is "sixty-eight million, five hundred sixty-five thousand, four hundred eighty-one".