136660777 has 8 divisors (see below), whose sum is σ = 150561792. Its totient is φ = 123006000.

The previous prime is 136660747. The next prime is 136660817. The reversal of 136660777 is 777066631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136660777 - 2⁷ = 136660649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a 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 in 7 ways as a sum of consecutive naturals, for example, 60393 + ... + 62614.

It is an arithmetic number, because the mean of its divisors is an integer number (18820224).

Almost surely, 2^136660777 is an apocalyptic number.

It is an amenable number.

136660777 is a deficient number, since it is larger than the sum of its proper divisors (13901015).

136660777 is a wasteful number, since it uses less digits than its factorization.

136660777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123119.

The product of its (nonzero) digits is 222264, while the sum is 43.

The square root of 136660777 is about 11690.2000410600. The cubic root of 136660777 is about 515.0878374701.

The spelling of 136660777 in words is "one hundred thirty-six million, six hundred sixty thousand, seven hundred seventy-seven".