68564443 has 4 divisors (see below), whose sum is σ = 69334920. Its totient is φ = 67793968.

The previous prime is 68564437. The next prime is 68564453. The reversal of 68564443 is 34446586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68564443 - 2⁵ = 68564411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68564396 and 68564405.

It is not an unprimeable number, because it can be changed into a prime (68564413) 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, 385105 + ... + 385282.

It is an arithmetic number, because the mean of its divisors is an integer number (17333730).

Almost surely, 2^68564443 is an apocalyptic number.

68564443 is a deficient number, since it is larger than the sum of its proper divisors (770477).

68564443 is an equidigital number, since it uses as much as digits as its factorization.

68564443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770476.

The product of its digits is 276480, while the sum is 40.

The square root of 68564443 is about 8280.3649074180. The cubic root of 68564443 is about 409.2917437123.

The spelling of 68564443 in words is "sixty-eight million, five hundred sixty-four thousand, four hundred forty-three".