133684653 has 4 divisors (see below), whose sum is σ = 178246208. Its totient is φ = 89123100.

The previous prime is 133684643. The next prime is 133684657. The reversal of 133684653 is 356486331.

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 not a de Polignac number, because 133684653 - 2²² = 129490349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133684657) 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, 22280773 + ... + 22280778.

It is an arithmetic number, because the mean of its divisors is an integer number (44561552).

Almost surely, 2^133684653 is an apocalyptic number.

It is an amenable number.

133684653 is a deficient number, since it is larger than the sum of its proper divisors (44561555).

133684653 is an equidigital number, since it uses as much as digits as its factorization.

133684653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44561554.

The product of its digits is 155520, while the sum is 39.

The square root of 133684653 is about 11562.2079638796. The cubic root of 133684653 is about 511.3212607033.

The spelling of 133684653 in words is "one hundred thirty-three million, six hundred eighty-four thousand, six hundred fifty-three".