133660753 has 4 divisors (see below), whose sum is σ = 136182708. Its totient is φ = 131138800.

The previous prime is 133660733. The next prime is 133660759. The reversal of 133660753 is 357066331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 357066331 = 313 ⋅1140787.

It can be written as a sum of positive squares in 2 ways, for example, as 102880449 + 30780304 = 10143^2 + 5548^2 .

It is a cyclic number.

It is not a de Polignac number, because 133660753 - 2⁵ = 133660721 is a prime.

It is a super-3 number, since 3×133660753³ (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 (133660759) 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, 1260898 + ... + 1261003.

It is an arithmetic number, because the mean of its divisors is an integer number (34045677).

Almost surely, 2^133660753 is an apocalyptic number.

It is an amenable number.

133660753 is a deficient number, since it is larger than the sum of its proper divisors (2521955).

133660753 is an equidigital number, since it uses as much as digits as its factorization.

133660753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521954.

The product of its (nonzero) digits is 34020, while the sum is 34.

The square root of 133660753 is about 11561.1743780638. The cubic root of 133660753 is about 511.2907877303.

The spelling of 133660753 in words is "one hundred thirty-three million, six hundred sixty thousand, seven hundred fifty-three".