133693 has 8 divisors (see below), whose sum is σ = 155520. Its totient is φ = 112560.

The previous prime is 133691. The next prime is 133697. The reversal of 133693 is 396331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133693 - 2¹ = 133691 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133691) 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, 363 + ... + 631.

It is an arithmetic number, because the mean of its divisors is an integer number (19440).

2¹³³⁶⁹³ is an apocalyptic number.

It is an amenable number.

133693 is a deficient number, since it is larger than the sum of its proper divisors (21827).

133693 is an equidigital number, since it uses as much as digits as its factorization.

133693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347.

The product of its digits is 1458, while the sum is 25.

The square root of 133693 is about 365.6405338581. The cubic root of 133693 is about 51.1331902438.

The spelling of 133693 in words is "one hundred thirty-three thousand, six hundred ninety-three".