133621713 has 6 divisors (see below), whose sum is σ = 193009154. Its totient is φ = 89081136.

The previous prime is 133621669. The next prime is 133621723. The reversal of 133621713 is 317126331.

133621713 is a `hidden beast` number, since 1 + 33 + 621 + 7 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118200384 + 15421329 = 10872^2 + 3927^2 .

It is not a de Polignac number, because 133621713 - 2¹⁰ = 133620689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133621723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7423420 + ... + 7423437.

Almost surely, 2^133621713 is an apocalyptic number.

It is an amenable number.

133621713 is a deficient number, since it is larger than the sum of its proper divisors (59387441).

133621713 is a wasteful number, since it uses less digits than its factorization.

133621713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14846863 (or 14846860 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 133621713 is about 11559.4858449673. The cubic root of 133621713 is about 511.2410031435.

The spelling of 133621713 in words is "one hundred thirty-three million, six hundred twenty-one thousand, seven hundred thirteen".