1068440305 has 16 divisors (see below), whose sum is σ = 1335343104. Its totient is φ = 819927360.

The previous prime is 1068440299. The next prime is 1068440311. The reversal of 1068440305 is 5030448601.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1068440299) and next prime (1068440311).

It is not a de Polignac number, because 1068440305 - 2³ = 1068440297 is a prime.

It is a super-2 number, since 2×1068440305² = 2283129370696986050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27537 + ... + 53806.

It is an arithmetic number, because the mean of its divisors is an integer number (83458944).

Almost surely, 2^1068440305 is an apocalyptic number.

It is an amenable number.

1068440305 is a deficient number, since it is larger than the sum of its proper divisors (266902799).

1068440305 is an equidigital number, since it uses as much as digits as its factorization.

1068440305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81456.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1068440305 is about 32687.0051396576. The cubic root of 1068440305 is about 1022.3119111711.

Adding to 1068440305 its reverse (5030448601), we get a palindrome (6098888906).

The spelling of 1068440305 in words is "one billion, sixty-eight million, four hundred forty thousand, three hundred five".