133663608 has 224 divisors, whose sum is σ = 424171440. Its totient is φ = 39191040.

The previous prime is 133663601. The next prime is 133663631. The reversal of 133663608 is 806366331.

133663608 is a `hidden beast` number, since 13 + 3 + 6 + 636 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133663601) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3108435 + ... + 3108477.

Almost surely, 2^133663608 is an apocalyptic number.

133663608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133663608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212085720).

133663608 is an abundant number, since it is smaller than the sum of its proper divisors (290507832).

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

133663608 is a wasteful number, since it uses less digits than its factorization.

133663608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 133663608 is about 11561.2978510200. The cubic root of 133663608 is about 511.2944281028.

The spelling of 133663608 in words is "one hundred thirty-three million, six hundred sixty-three thousand, six hundred eight".