133885673 has 4 divisors (see below), whose sum is σ = 134395008. Its totient is φ = 133376340.

The previous prime is 133885643. The next prime is 133885679. The reversal of 133885673 is 376588331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133885673 - 2²⁰ = 132837097 is a prime.

It is a super-3 number, since 3×133885673³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133885679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254273 + ... + 254798.

It is an arithmetic number, because the mean of its divisors is an integer number (33598752).

Almost surely, 2^133885673 is an apocalyptic number.

It is an amenable number.

133885673 is a deficient number, since it is larger than the sum of its proper divisors (509335).

133885673 is an equidigital number, since it uses as much as digits as its factorization.

133885673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509334.

The product of its digits is 362880, while the sum is 44.

The square root of 133885673 is about 11570.8976747701. The cubic root of 133885673 is about 511.5774215546.

The spelling of 133885673 in words is "one hundred thirty-three million, eight hundred eighty-five thousand, six hundred seventy-three".