1306620005 has 8 divisors (see below), whose sum is σ = 1569177600. Its totient is φ = 1044473616.

The previous prime is 1306620001. The next prime is 1306620011. The reversal of 1306620005 is 5000266031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1306620005 - 2² = 1306620001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306620001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95765 + ... + 108554.

It is an arithmetic number, because the mean of its divisors is an integer number (196147200).

Almost surely, 2^1306620005 is an apocalyptic number.

It is an amenable number.

1306620005 is a deficient number, since it is larger than the sum of its proper divisors (262557595).

1306620005 is a wasteful number, since it uses less digits than its factorization.

1306620005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205603.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1306620005 is about 36147.1991307764. The cubic root of 1306620005 is about 1093.2423181618.

Adding to 1306620005 its reverse (5000266031), we get a palindrome (6306886036).

The spelling of 1306620005 in words is "one billion, three hundred six million, six hundred twenty thousand, five".