135691447 has 8 divisors (see below), whose sum is σ = 137682720. Its totient is φ = 133710720.

The previous prime is 135691411. The next prime is 135691453. The reversal of 135691447 is 744196531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135691447 - 2¹¹ = 135689399 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 (135691547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25422 + ... + 30292.

It is an arithmetic number, because the mean of its divisors is an integer number (17210340).

Almost surely, 2^135691447 is an apocalyptic number.

135691447 is a deficient number, since it is larger than the sum of its proper divisors (1991273).

135691447 is an equidigital number, since it uses as much as digits as its factorization.

135691447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273.

The product of its digits is 90720, while the sum is 40.

The square root of 135691447 is about 11648.6671769778. The cubic root of 135691447 is about 513.8671135224.

The spelling of 135691447 in words is "one hundred thirty-five million, six hundred ninety-one thousand, four hundred forty-seven".