1343405666 has 16 divisors (see below), whose sum is σ = 2105417664. Its totient is φ = 641674704.

The previous prime is 1343405663. The next prime is 1343405683. The reversal of 1343405666 is 6665043431.

It is not an unprimeable number, because it can be changed into a prime (1343405663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18341 + ... + 54983.

It is an arithmetic number, because the mean of its divisors is an integer number (131588604).

Almost surely, 2^1343405666 is an apocalyptic number.

1343405666 is a deficient number, since it is larger than the sum of its proper divisors (762011998).

1343405666 is a wasteful number, since it uses less digits than its factorization.

1343405666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37465.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 1343405666 is about 36652.4987688425. The cubic root of 1343405666 is about 1103.4069756910.

The spelling of 1343405666 in words is "one billion, three hundred forty-three million, four hundred five thousand, six hundred sixty-six".