135766865 has 8 divisors (see below), whose sum is σ = 175452648. Its totient is φ = 100258560.

The previous prime is 135766831. The next prime is 135766871. The reversal of 135766865 is 568667531.

It can be written as a sum of positive squares in 4 ways, for example, as 4068289 + 131698576 = 2017^2 + 11476^2 .

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

It is not a de Polignac number, because 135766865 - 2¹⁰ = 135765841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044296 + ... + 1044425.

It is an arithmetic number, because the mean of its divisors is an integer number (21931581).

Almost surely, 2^135766865 is an apocalyptic number.

It is an amenable number.

135766865 is a deficient number, since it is larger than the sum of its proper divisors (39685783).

135766865 is a wasteful number, since it uses less digits than its factorization.

135766865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088739.

The product of its digits is 907200, while the sum is 47.

The square root of 135766865 is about 11651.9039216773. The cubic root of 135766865 is about 513.9622992126.

It can be divided in two parts, 135766 and 865, that added together give a palindrome (136631).

The spelling of 135766865 in words is "one hundred thirty-five million, seven hundred sixty-six thousand, eight hundred sixty-five".