133145660 has 12 divisors (see below), whose sum is σ = 279605928. Its totient is φ = 53258256.

The previous prime is 133145659. The next prime is 133145687. The reversal of 133145660 is 66541331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3328622 + ... + 3328661.

It is an arithmetic number, because the mean of its divisors is an integer number (23300494).

Almost surely, 2^133145660 is an apocalyptic number.

133145660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133145660 is an abundant number, since it is smaller than the sum of its proper divisors (146460268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133145660 is a wasteful number, since it uses less digits than its factorization.

133145660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657292 (or 6657290 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 133145660 is about 11538.8760284527. The cubic root of 133145660 is about 510.6331493051.

Adding to 133145660 its reverse (66541331), we get a palindrome (199686991).

The spelling of 133145660 in words is "one hundred thirty-three million, one hundred forty-five thousand, six hundred sixty".