133660533 has 16 divisors (see below), whose sum is σ = 183266496. Its totient is φ = 86597760.

The previous prime is 133660531. The next prime is 133660589. The reversal of 133660533 is 335066331.

It is not a de Polignac number, because 133660533 - 2¹ = 133660531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133660533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133660531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32110 + ... + 36032.

It is an arithmetic number, because the mean of its divisors is an integer number (11454156).

Almost surely, 2^133660533 is an apocalyptic number.

It is an amenable number.

133660533 is a deficient number, since it is larger than the sum of its proper divisors (49605963).

133660533 is a wasteful number, since it uses less digits than its factorization.

133660533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244.

The product of its (nonzero) digits is 14580, while the sum is 30.

The square root of 133660533 is about 11561.1648634556. The cubic root of 133660533 is about 511.2905072091.

The spelling of 133660533 in words is "one hundred thirty-three million, six hundred sixty thousand, five hundred thirty-three".