133730643 has 8 divisors (see below), whose sum is σ = 182656656. Its totient is φ = 86979200.

The previous prime is 133730627. The next prime is 133730669. The reversal of 133730643 is 346037331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133730643 - 2⁴ = 133730627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133730643.

It is not an unprimeable number, because it can be changed into a prime (133730743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543498 + ... + 543743.

It is an arithmetic number, because the mean of its divisors is an integer number (22832082).

Almost surely, 2^133730643 is an apocalyptic number.

133730643 is a deficient number, since it is larger than the sum of its proper divisors (48926013).

133730643 is a wasteful number, since it uses less digits than its factorization.

133730643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087285.

The product of its (nonzero) digits is 13608, while the sum is 30.

The square root of 133730643 is about 11564.1965998508. The cubic root of 133730643 is about 511.3798886464.

Adding to 133730643 its reverse (346037331), we get a palindrome (479767974).

The spelling of 133730643 in words is "one hundred thirty-three million, seven hundred thirty thousand, six hundred forty-three".