135206565 has 32 divisors (see below), whose sum is σ = 245239680. Its totient is φ = 63058176.

The previous prime is 135206563. The next prime is 135206567. The reversal of 135206565 is 565602531.

It is an interprime number because it is at equal distance from previous prime (135206563) and next prime (135206567).

It is not a de Polignac number, because 135206565 - 2¹ = 135206563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135206563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14542 + ... + 21951.

It is an arithmetic number, because the mean of its divisors is an integer number (7663740).

Almost surely, 2^135206565 is an apocalyptic number.

135206565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135206565 is a deficient number, since it is larger than the sum of its proper divisors (110033115).

135206565 is a wasteful number, since it uses less digits than its factorization.

135206565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36533.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 135206565 is about 11627.8357831541. The cubic root of 135206565 is about 513.2542959871.

The spelling of 135206565 in words is "one hundred thirty-five million, two hundred six thousand, five hundred sixty-five".