135326689 has 3 divisors (see below), whose sum is σ = 135338323. Its totient is φ = 135315056.

The previous prime is 135326651. The next prime is 135326699. The reversal of 135326689 is 986623531.

The square root of 135326689 is 11633.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 91872225 + 43454464 = 9585^2 + 6592^2 .

It is a de Polignac number, because none of the positive numbers 2^k-135326689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135326699) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5817 + ... + 17449.

Almost surely, 2^135326689 is an apocalyptic number.

135326689 is the 11633-rd square number.

135326689 is the 5817-th centered octagonal number.

It is an amenable number.

135326689 is a deficient number, since it is larger than the sum of its proper divisors (11634).

135326689 is an frugal number, since it uses more digits than its factorization.

135326689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23266 (or 11633 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The cubic root of 135326689 is about 513.4062509094.

The spelling of 135326689 in words is "one hundred thirty-five million, three hundred twenty-six thousand, six hundred eighty-nine".