1345345666 has 24 divisors (see below), whose sum is σ = 2348842320. Its totient is φ = 576244872.

The previous prime is 1345345663. The next prime is 1345345681. The reversal of 1345345666 is 6665435431.

It is a super-2 number, since 2×1345345666² = 3619909922049967112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1345345663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250081 + ... + 255403.

It is an arithmetic number, because the mean of its divisors is an integer number (97868430).

Almost surely, 2^1345345666 is an apocalyptic number.

1345345666 is a deficient number, since it is larger than the sum of its proper divisors (1003496654).

1345345666 is a wasteful number, since it uses less digits than its factorization.

1345345666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7918 (or 7911 counting only the distinct ones).

The product of its digits is 777600, while the sum is 43.

The square root of 1345345666 is about 36678.9539927190. The cubic root of 1345345666 is about 1103.9378602435.

The spelling of 1345345666 in words is "one billion, three hundred forty-five million, three hundred forty-five thousand, six hundred sixty-six".