1343655666 has 96 divisors (see below), whose sum is σ = 3138698160. Its totient is φ = 414554112.

The previous prime is 1343655659. The next prime is 1343655667. The reversal of 1343655666 is 6665563431.

It can be written as a sum of positive squares in 8 ways, for example, as 972130041 + 371525625 = 31179^2 + 19275^2 .

It is not an unprimeable number, because it can be changed into a prime (1343655667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1409446 + ... + 1410398.

Almost surely, 2^1343655666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1343655666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569349080).

1343655666 is an abundant number, since it is smaller than the sum of its proper divisors (1795042494).

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

1343655666 is a wasteful number, since it uses less digits than its factorization.

1343655666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1097 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The square root of 1343655666 is about 36655.9090188744. The cubic root of 1343655666 is about 1103.4754173244.

The spelling of 1343655666 in words is "one billion, three hundred forty-three million, six hundred fifty-five thousand, six hundred sixty-six".