1068640771 has 8 divisors (see below), whose sum is σ = 1197298224. Its totient is φ = 945234720.

The previous prime is 1068640751. The next prime is 1068640801. The reversal of 1068640771 is 1770468601.

1068640771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1068640771 - 2⁹ = 1068640259 is a prime.

It is a super-2 number, since 2×1068640771² = 2283986194886948882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1068640721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312420 + ... + 1313233.

It is an arithmetic number, because the mean of its divisors is an integer number (149662278).

Almost surely, 2^1068640771 is an apocalyptic number.

1068640771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1068640771 is a deficient number, since it is larger than the sum of its proper divisors (128657453).

1068640771 is a wasteful number, since it uses less digits than its factorization.

1068640771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625701.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 1068640771 is about 32690.0714437886. The cubic root of 1068640771 is about 1022.3758442278.

The spelling of 1068640771 in words is "one billion, sixty-eight million, six hundred forty thousand, seven hundred seventy-one".