135381697 has 6 divisors (see below), whose sum is σ = 148808114. Its totient is φ = 123074160.

The previous prime is 135381679. The next prime is 135381733. The reversal of 135381697 is 796183531.

It can be written as a sum of positive squares in only one way, i.e., 134931456 + 450241 = 11616^2 + 671^2 .

It is not a de Polignac number, because 135381697 - 2¹⁵ = 135348929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135381397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559308 + ... + 559549.

Almost surely, 2^135381697 is an apocalyptic number.

It is an amenable number.

135381697 is a deficient number, since it is larger than the sum of its proper divisors (13426417).

135381697 is a wasteful number, since it uses less digits than its factorization.

135381697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118879 (or 1118868 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 135381697 is about 11635.3640682189. The cubic root of 135381697 is about 513.4758051256.

The spelling of 135381697 in words is "one hundred thirty-five million, three hundred eighty-one thousand, six hundred ninety-seven".