135765623 has 12 divisors (see below), whose sum is σ = 158605920. Its totient is φ = 115873632.

The previous prime is 135765613. The next prime is 135765631. The reversal of 135765623 is 326567531.

It is not a de Polignac number, because 135765623 - 2¹⁰ = 135764599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135765613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5915 + ... + 17507.

It is an arithmetic number, because the mean of its divisors is an integer number (13217160).

Almost surely, 2^135765623 is an apocalyptic number.

135765623 is a deficient number, since it is larger than the sum of its proper divisors (22840297).

135765623 is a wasteful number, since it uses less digits than its factorization.

135765623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846 (or 11839 counting only the distinct ones).

The product of its digits is 113400, while the sum is 38.

The square root of 135765623 is about 11651.8506255444. The cubic root of 135765623 is about 513.9607319595.

The spelling of 135765623 in words is "one hundred thirty-five million, seven hundred sixty-five thousand, six hundred twenty-three".