1336666679 has 2 divisors, whose sum is σ = 1336666680. Its totient is φ = 1336666678.

The previous prime is 1336666657. The next prime is 1336666691. The reversal of 1336666679 is 9766666331.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9766666331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1336666679 - 2⁸ = 1336666423 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1336666679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1336606679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668333339 + 668333340.

It is an arithmetic number, because the mean of its divisors is an integer number (668333340).

Almost surely, 2^1336666679 is an apocalyptic number.

1336666679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1336666679 is an equidigital number, since it uses as much as digits as its factorization.

1336666679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 53.

The square root of 1336666679 is about 36560.4523905271. The cubic root of 1336666679 is about 1101.5588584246.

The spelling of 1336666679 in words is "one billion, three hundred thirty-six million, six hundred sixty-six thousand, six hundred seventy-nine".