135966517 has 4 divisors (see below), whose sum is σ = 137995936. Its totient is φ = 133937100.

The previous prime is 135966511. The next prime is 135966541. The reversal of 135966517 is 715669531.

It is a happy number.

135966517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135966517 - 2¹¹ = 135964469 is a prime.

It is a super-2 number, since 2×135966517² = 36973787490222578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135966511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1014609 + ... + 1014742.

It is an arithmetic number, because the mean of its divisors is an integer number (34498984).

Almost surely, 2^135966517 is an apocalyptic number.

It is an amenable number.

135966517 is a deficient number, since it is larger than the sum of its proper divisors (2029419).

135966517 is an equidigital number, since it uses as much as digits as its factorization.

135966517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029418.

The product of its digits is 170100, while the sum is 43.

The square root of 135966517 is about 11660.4681295392. The cubic root of 135966517 is about 514.2141116180.

It can be divided in two parts, 1359 and 66517, that added together give a palindrome (67876).

The spelling of 135966517 in words is "one hundred thirty-five million, nine hundred sixty-six thousand, five hundred seventeen".