135510661 has 8 divisors (see below), whose sum is σ = 159201504. Its totient is φ = 113715120.

The previous prime is 135510659. The next prime is 135510667. The reversal of 135510661 is 166015531.

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 135510661 - 2¹ = 135510659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135510667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473671 + ... + 473956.

It is an arithmetic number, because the mean of its divisors is an integer number (19900188).

Almost surely, 2^135510661 is an apocalyptic number.

135510661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135510661 is a deficient number, since it is larger than the sum of its proper divisors (23690843).

135510661 is a wasteful number, since it uses less digits than its factorization.

135510661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947651.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 135510661 is about 11640.9046469765. The cubic root of 135510661 is about 513.6387983007.

The spelling of 135510661 in words is "one hundred thirty-five million, five hundred ten thousand, six hundred sixty-one".