1356666679 has 12 divisors (see below), whose sum is σ = 1398096504. Its totient is φ = 1316431584.

The previous prime is 1356666677. The next prime is 1356666743. The reversal of 1356666679 is 9766666531.

It is not a de Polignac number, because 1356666679 - 2¹ = 1356666677 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356666677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 605349 + ... + 607585.

It is an arithmetic number, because the mean of its divisors is an integer number (116508042).

Almost surely, 2^1356666679 is an apocalyptic number.

1356666679 is a deficient number, since it is larger than the sum of its proper divisors (41429825).

1356666679 is an equidigital number, since it uses as much as digits as its factorization.

1356666679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754 (or 2717 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 55.

The square root of 1356666679 is about 36832.9564249192. The cubic root of 1356666679 is about 1107.0257412588.

The spelling of 1356666679 in words is "one billion, three hundred fifty-six million, six hundred sixty-six thousand, six hundred seventy-nine".