1306666336 has 12 divisors (see below), whose sum is σ = 2572499412. Its totient is φ = 653333152.

The previous prime is 1306666313. The next prime is 1306666367. The reversal of 1306666336 is 6336666031.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20416630 + ... + 20416693.

It is an arithmetic number, because the mean of its divisors is an integer number (214374951).

Almost surely, 2^1306666336 is an apocalyptic number.

1306666336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1306666336 is a deficient number, since it is larger than the sum of its proper divisors (1265833076).

1306666336 is an equidigital number, since it uses as much as digits as its factorization.

1306666336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40833333 (or 40833325 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 40.

The square root of 1306666336 is about 36147.8399907934. The cubic root of 1306666336 is about 1093.2552396465.

The spelling of 1306666336 in words is "one billion, three hundred six million, six hundred sixty-six thousand, three hundred thirty-six".