133536387 has 8 divisors (see below), whose sum is σ = 184188240. Its totient is φ = 85954400.

The previous prime is 133536379. The next prime is 133536391. The reversal of 133536387 is 783635331.

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 133536387 - 2³ = 133536379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133536317) 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, 767364 + ... + 767537.

It is an arithmetic number, because the mean of its divisors is an integer number (23023530).

Almost surely, 2^133536387 is an apocalyptic number.

133536387 is a deficient number, since it is larger than the sum of its proper divisors (50651853).

133536387 is a wasteful number, since it uses less digits than its factorization.

133536387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534933.

The product of its digits is 136080, while the sum is 39.

The square root of 133536387 is about 11555.7945204992. The cubic root of 133536387 is about 511.1321599590.

The spelling of 133536387 in words is "one hundred thirty-three million, five hundred thirty-six thousand, three hundred eighty-seven".