1306668797 has 4 divisors (see below), whose sum is σ = 1493335776. Its totient is φ = 1120001820.

The previous prime is 1306668793. The next prime is 1306668809. The reversal of 1306668797 is 7978666031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1306668797 - 2² = 1306668793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306668791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93333479 + ... + 93333492.

It is an arithmetic number, because the mean of its divisors is an integer number (373333944).

Almost surely, 2^1306668797 is an apocalyptic number.

It is an amenable number.

1306668797 is a deficient number, since it is larger than the sum of its proper divisors (186666979).

1306668797 is an equidigital number, since it uses as much as digits as its factorization.

1306668797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186666978.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 1306668797 is about 36147.8740315388. The cubic root of 1306668797 is about 1093.2559259986.

The spelling of 1306668797 in words is "one billion, three hundred six million, six hundred sixty-eight thousand, seven hundred ninety-seven".