135578705 has 4 divisors (see below), whose sum is σ = 162694452. Its totient is φ = 108462960.

The previous prime is 135578671. The next prime is 135578711. The reversal of 135578705 is 507875531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105185536 + 30393169 = 10256^2 + 5513^2 .

It is not a de Polignac number, because 135578705 - 2¹⁸ = 135316561 is a prime.

It is a Duffinian 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, 13557866 + ... + 13557875.

It is an arithmetic number, because the mean of its divisors is an integer number (40673613).

Almost surely, 2^135578705 is an apocalyptic number.

It is an amenable number.

135578705 is a deficient number, since it is larger than the sum of its proper divisors (27115747).

135578705 is an equidigital number, since it uses as much as digits as its factorization.

135578705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27115746.

The product of its (nonzero) digits is 147000, while the sum is 41.

The square root of 135578705 is about 11643.8269052747. The cubic root of 135578705 is about 513.7247551052.

The spelling of 135578705 in words is "one hundred thirty-five million, five hundred seventy-eight thousand, seven hundred five".