133672873 has 2 divisors, whose sum is σ = 133672874. Its totient is φ = 133672872.

The previous prime is 133672871. The next prime is 133672951. The reversal of 133672873 is 378276331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99940009 + 33732864 = 9997^2 + 5808^2 .

It is a cyclic number.

It is not a de Polignac number, because 133672873 - 2¹ = 133672871 is a prime.

Together with 133672871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133672871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66836436 + 66836437.

It is an arithmetic number, because the mean of its divisors is an integer number (66836437).

Almost surely, 2^133672873 is an apocalyptic number.

It is an amenable number.

133672873 is a deficient number, since it is larger than the sum of its proper divisors (1).

133672873 is an equidigital number, since it uses as much as digits as its factorization.

133672873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 40.

The square root of 133672873 is about 11561.6985343850. The cubic root of 133672873 is about 511.3062414241.

The spelling of 133672873 in words is "one hundred thirty-three million, six hundred seventy-two thousand, eight hundred seventy-three".