133678017 has 18 divisors (see below), whose sum is σ = 212241666. Its totient is φ = 81016320.

The previous prime is 133678009. The next prime is 133678049. The reversal of 133678017 is 710876331.

It can be written as a sum of positive squares in only one way, i.e., 103306896 + 30371121 = 10164^2 + 5511^2 .

It is not a de Polignac number, because 133678017 - 2³ = 133678009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133678007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60288 + ... + 62465.

Almost surely, 2^133678017 is an apocalyptic number.

It is an amenable number.

133678017 is a deficient number, since it is larger than the sum of its proper divisors (78563649).

133678017 is a wasteful number, since it uses less digits than its factorization.

133678017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122781 (or 122767 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 133678017 is about 11561.9209909080. The cubic root of 133678017 is about 511.3128000362.

The spelling of 133678017 in words is "one hundred thirty-three million, six hundred seventy-eight thousand, seventeen".