135581696 has 52 divisors (see below), whose sum is σ = 275217600. Its totient is φ = 66772992.

The previous prime is 135581687. The next prime is 135581713. The reversal of 135581696 is 696185531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323375 + ... + 323793.

Almost surely, 2^135581696 is an apocalyptic number.

135581696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135581696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137608800).

135581696 is an abundant number, since it is smaller than the sum of its proper divisors (139635904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135581696 is an frugal number, since it uses more digits than its factorization.

135581696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 500 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 135581696 is about 11643.9553417213. The cubic root of 135581696 is about 513.7285328357.

The spelling of 135581696 in words is "one hundred thirty-five million, five hundred eighty-one thousand, six hundred ninety-six".