1340068668 has 12 divisors (see below), whose sum is σ = 3126826920. Its totient is φ = 446689552.

The previous prime is 1340068637. The next prime is 1340068687. The reversal of 1340068668 is 8668600431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55836183 + ... + 55836206.

It is an arithmetic number, because the mean of its divisors is an integer number (260568910).

Almost surely, 2^1340068668 is an apocalyptic number.

It is an amenable number.

1340068668 is an abundant number, since it is smaller than the sum of its proper divisors (1786758252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1340068668 is a wasteful number, since it uses less digits than its factorization.

1340068668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111672396 (or 111672394 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 1340068668 is about 36606.9483568352. The cubic root of 1340068668 is about 1102.4926031353.

The spelling of 1340068668 in words is "one billion, three hundred forty million, sixty-eight thousand, six hundred sixty-eight".