135726723 has 12 divisors (see below), whose sum is σ = 213872568. Its totient is φ = 82258560.

The previous prime is 135726719. The next prime is 135726733. The reversal of 135726723 is 327627531.

135726723 is a `hidden beast` number, since 1 + 3 + 572 + 67 + 23 = 666.

It is not a de Polignac number, because 135726723 - 2² = 135726719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135726713) 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, 685390 + ... + 685587.

It is an arithmetic number, because the mean of its divisors is an integer number (17822714).

Almost surely, 2^135726723 is an apocalyptic number.

135726723 is a deficient number, since it is larger than the sum of its proper divisors (78145845).

135726723 is a wasteful number, since it uses less digits than its factorization.

135726723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370994 (or 1370991 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 135726723 is about 11650.1812432254. The cubic root of 135726723 is about 513.9116400470.

The spelling of 135726723 in words is "one hundred thirty-five million, seven hundred twenty-six thousand, seven hundred twenty-three".