133605696 has 56 divisors (see below), whose sum is σ = 404002240. Its totient is φ = 38172672.

The previous prime is 133605683. The next prime is 133605707. The reversal of 133605696 is 696506331.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48361 + ... + 51048.

Almost surely, 2^133605696 is an apocalyptic number.

133605696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

133605696 is an abundant number, since it is smaller than the sum of its proper divisors (270396544).

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

133605696 is an equidigital number, since it uses as much as digits as its factorization.

133605696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99431 (or 99421 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 133605696 is about 11558.7930165740. The cubic root of 133605696 is about 511.2205751403.

The spelling of 133605696 in words is "one hundred thirty-three million, six hundred five thousand, six hundred ninety-six".