1345308666 has 64 divisors (see below), whose sum is σ = 3013718400. Its totient is φ = 397506816.

The previous prime is 1345308631. The next prime is 1345308667. The reversal of 1345308666 is 6668035431.

It is not an unprimeable number, because it can be changed into a prime (1345308667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 444105 + ... + 447123.

It is an arithmetic number, because the mean of its divisors is an integer number (47089350).

Almost surely, 2^1345308666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1345308666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506859200).

1345308666 is an abundant number, since it is smaller than the sum of its proper divisors (1668409734).

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

1345308666 is a wasteful number, since it uses less digits than its factorization.

1345308666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 1345308666 is about 36678.4496128176. The cubic root of 1345308666 is about 1103.9277399013.

The spelling of 1345308666 in words is "one billion, three hundred forty-five million, three hundred eight thousand, six hundred sixty-six".