135680506 has 8 divisors (see below), whose sum is σ = 219176244. Its totient is φ = 62621760.

The previous prime is 135680453. The next prime is 135680507. The reversal of 135680506 is 605086531.

It can be written as a sum of positive squares in 2 ways, for example, as 122655625 + 13024881 = 11075^2 + 3609^2 .

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

It is not an unprimeable number, because it can be changed into a prime (135680507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2609215 + ... + 2609266.

Almost surely, 2^135680506 is an apocalyptic number.

135680506 is a deficient number, since it is larger than the sum of its proper divisors (83495738).

135680506 is a wasteful number, since it uses less digits than its factorization.

135680506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218496.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 135680506 is about 11648.1975429678. The cubic root of 135680506 is about 513.8533018653.

The spelling of 135680506 in words is "one hundred thirty-five million, six hundred eighty thousand, five hundred six".