136777505 has 8 divisors (see below), whose sum is σ = 164211432. Its totient is φ = 109369728.

The previous prime is 136777499. The next prime is 136777541. The reversal of 136777505 is 505777631.

It can be written as a sum of positive squares in 4 ways, for example, as 91833889 + 44943616 = 9583^2 + 6704^2 .

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 136777505 - 2⁶ = 136777441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 7859 + ... + 18311.

It is an arithmetic number, because the mean of its divisors is an integer number (20526429).

Almost surely, 2^136777505 is an apocalyptic number.

It is an amenable number.

136777505 is a deficient number, since it is larger than the sum of its proper divisors (27433927).

136777505 is a wasteful number, since it uses less digits than its factorization.

136777505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13075.

The product of its (nonzero) digits is 154350, while the sum is 41.

The square root of 136777505 is about 11695.1915332755. The cubic root of 136777505 is about 515.2344488193.

The spelling of 136777505 in words is "one hundred thirty-six million, seven hundred seventy-seven thousand, five hundred five".