135465661 has 4 divisors (see below), whose sum is σ = 135489024. Its totient is φ = 135442300.

The previous prime is 135465623. The next prime is 135465667. The reversal of 135465661 is 166564531.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 135465661 - 2⁹ = 135465149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135465661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135465667) 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, 4356 + ... + 17026.

It is an arithmetic number, because the mean of its divisors is an integer number (33872256).

Almost surely, 2^135465661 is an apocalyptic number.

It is an amenable number.

135465661 is a deficient number, since it is larger than the sum of its proper divisors (23363).

135465661 is a wasteful number, since it uses less digits than its factorization.

135465661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23362.

The product of its digits is 64800, while the sum is 37.

The square root of 135465661 is about 11638.9716470142. The cubic root of 135465661 is about 513.5819360958.

The spelling of 135465661 in words is "one hundred thirty-five million, four hundred sixty-five thousand, six hundred sixty-one".