136660747 has 2 divisors, whose sum is σ = 136660748. Its totient is φ = 136660746.

The previous prime is 136660723. The next prime is 136660817. The reversal of 136660747 is 747066631.

It is a weak prime.

It is an emirp because it is prime and its reverse (747066631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136660747 - 2⁷ = 136660619 is a prime.

It is not a weakly prime, because it can be changed into another prime (136660717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68330373 + 68330374.

It is an arithmetic number, because the mean of its divisors is an integer number (68330374).

Almost surely, 2^136660747 is an apocalyptic number.

136660747 is a deficient number, since it is larger than the sum of its proper divisors (1).

136660747 is an equidigital number, since it uses as much as digits as its factorization.

136660747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 136660747 is about 11690.1987579339. The cubic root of 136660747 is about 515.0877997791.

The spelling of 136660747 in words is "one hundred thirty-six million, six hundred sixty thousand, seven hundred forty-seven".