133688704 has 16 divisors (see below), whose sum is σ = 266333220. Its totient is φ = 66844288.

The previous prime is 133688701. The next prime is 133688707. The reversal of 133688704 is 407886331.

It is an interprime number because it is at equal distance from previous prime (133688701) and next prime (133688707).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133688701) by changing a digit.

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 as a sum of consecutive naturals, namely, 522094 + ... + 522349.

Almost surely, 2^133688704 is an apocalyptic number.

It is an amenable number.

133688704 is a deficient number, since it is larger than the sum of its proper divisors (132644516).

133688704 is an equidigital number, since it uses as much as digits as its factorization.

133688704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044457 (or 1044445 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 133688704 is about 11562.3831453555. The cubic root of 133688704 is about 511.3264254485.

The spelling of 133688704 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, seven hundred four".