133663604 has 12 divisors (see below), whose sum is σ = 234072804. Its totient is φ = 66785664.

The previous prime is 133663601. The next prime is 133663631. The reversal of 133663604 is 406366331.

It can be written as a sum of positive squares in 2 ways, for example, as 28601104 + 105062500 = 5348^2 + 10250^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 4547 + ... + 16970.

It is an arithmetic number, because the mean of its divisors is an integer number (19506067).

Almost surely, 2^133663604 is an apocalyptic number.

It is an amenable number.

133663604 is a deficient number, since it is larger than the sum of its proper divisors (100409200).

133663604 is a wasteful number, since it uses less digits than its factorization.

133663604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23074 (or 23072 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 133663604 is about 11561.2976780291. The cubic root of 133663604 is about 511.2944230025.

The spelling of 133663604 in words is "one hundred thirty-three million, six hundred sixty-three thousand, six hundred four".