135640719 has 12 divisors (see below), whose sum is σ = 196045200. Its totient is φ = 90371904.

The previous prime is 135640711. The next prime is 135640721. The reversal of 135640719 is 917046531.

135640719 is a `hidden beast` number, since 1 + 3 + 5 + 640 + 7 + 1 + 9 = 666.

135640719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135640719 - 2³ = 135640711 is a prime.

It is a super-2 number, since 2×135640719² = 36796809301673922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135640711) 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, 15622 + ... + 22700.

It is an arithmetic number, because the mean of its divisors is an integer number (16337100).

Almost surely, 2^135640719 is an apocalyptic number.

135640719 is a deficient number, since it is larger than the sum of its proper divisors (60404481).

135640719 is a wasteful number, since it uses less digits than its factorization.

135640719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9214 (or 9211 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 135640719 is about 11646.4895569438. The cubic root of 135640719 is about 513.8030694464.

The spelling of 135640719 in words is "one hundred thirty-five million, six hundred forty thousand, seven hundred nineteen".