133658968 has 8 divisors (see below), whose sum is σ = 250610580. Its totient is φ = 66829480.

The previous prime is 133658963. The next prime is 133658971. The reversal of 133658968 is 869856331.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133658963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8353678 + ... + 8353693.

Almost surely, 2^133658968 is an apocalyptic number.

It is an amenable number.

133658968 is a deficient number, since it is larger than the sum of its proper divisors (116951612).

133658968 is a wasteful number, since it uses less digits than its factorization.

133658968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16707377 (or 16707373 counting only the distinct ones).

The product of its digits is 933120, while the sum is 49.

The square root of 133658968 is about 11561.0971797663. The cubic root of 133658968 is about 511.2885116742.

The spelling of 133658968 in words is "one hundred thirty-three million, six hundred fifty-eight thousand, nine hundred sixty-eight".