1347666345 has 24 divisors (see below), whose sum is σ = 2341310400. Its totient is φ = 717107616.

The previous prime is 1347666343. The next prime is 1347666349. The reversal of 1347666345 is 5436667431.

It is not a de Polignac number, because 1347666345 - 2¹ = 1347666343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1347666345.

It is not an unprimeable number, because it can be changed into a prime (1347666343) 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 23 ways as a sum of consecutive naturals, for example, 14355 + ... + 53864.

It is an arithmetic number, because the mean of its divisors is an integer number (97554600).

Almost surely, 2^1347666345 is an apocalyptic number.

1347666345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1347666345 is a deficient number, since it is larger than the sum of its proper divisors (993644055).

1347666345 is a wasteful number, since it uses less digits than its factorization.

1347666345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68669 (or 68666 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 1347666345 is about 36710.5753836684. The cubic root of 1347666345 is about 1104.5722483235.

The spelling of 1347666345 in words is "one billion, three hundred forty-seven million, six hundred sixty-six thousand, three hundred forty-five".