133688604 has 48 divisors (see below), whose sum is σ = 372008448. Its totient is φ = 36535488.

The previous prime is 133688593. The next prime is 133688641. The reversal of 133688604 is 406886331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32667 + ... + 36530.

It is an arithmetic number, because the mean of its divisors is an integer number (7750176).

Almost surely, 2^133688604 is an apocalyptic number.

133688604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133688604 is an abundant number, since it is smaller than the sum of its proper divisors (238319844).

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

133688604 is a wasteful number, since it uses less digits than its factorization.

133688604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69234 (or 69232 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 133688604 is about 11562.3788209866. The cubic root of 133688604 is about 511.3262979566.

The spelling of 133688604 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, six hundred four".