1336742647 has 4 divisors (see below), whose sum is σ = 1353663520. Its totient is φ = 1319821776.

The previous prime is 1336742633. The next prime is 1336742683. The reversal of 1336742647 is 7462476331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7462476331 = 181 ⋅41229151.

It is a cyclic number.

It is not a de Polignac number, because 1336742647 - 2¹⁵ = 1336709879 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 (1336742747) 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, 8460318 + ... + 8460475.

It is an arithmetic number, because the mean of its divisors is an integer number (338415880).

Almost surely, 2^1336742647 is an apocalyptic number.

1336742647 is a deficient number, since it is larger than the sum of its proper divisors (16920873).

1336742647 is an equidigital number, since it uses as much as digits as its factorization.

1336742647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16920872.

The product of its digits is 508032, while the sum is 43.

The square root of 1336742647 is about 36561.4913125819. The cubic root of 1336742647 is about 1101.5797266633.

The spelling of 1336742647 in words is "one billion, three hundred thirty-six million, seven hundred forty-two thousand, six hundred forty-seven".