1068405665 has 8 divisors (see below), whose sum is σ = 1282262400. Its totient is φ = 854607472.

The previous prime is 1068405619. The next prime is 1068405697. The reversal of 1068405665 is 5665048601.

It is a happy number.

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 1068405665 - 2⁶ = 1068405601 is a prime.

It is a super-2 number, since 2×1068405665² = 2282981330008184450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62186 + ... + 77484.

It is an arithmetic number, because the mean of its divisors is an integer number (160282800).

Almost surely, 2^1068405665 is an apocalyptic number.

It is an amenable number.

1068405665 is a deficient number, since it is larger than the sum of its proper divisors (213856735).

1068405665 is a wasteful number, since it uses less digits than its factorization.

1068405665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29271.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 1068405665 is about 32686.4752611841. The cubic root of 1068405665 is about 1022.3008628960.

The spelling of 1068405665 in words is "one billion, sixty-eight million, four hundred five thousand, six hundred sixty-five".