133645612 has 12 divisors (see below), whose sum is σ = 234047520. Its totient is φ = 66774896.

The previous prime is 133645597. The next prime is 133645613. The reversal of 133645612 is 216546331.

133645612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×133645612² = 35722299213709088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133645613) 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, 5287 + ... + 17182.

It is an arithmetic number, because the mean of its divisors is an integer number (19503960).

Almost surely, 2^133645612 is an apocalyptic number.

It is an amenable number.

133645612 is a deficient number, since it is larger than the sum of its proper divisors (100401908).

133645612 is a wasteful number, since it uses less digits than its factorization.

133645612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23960 (or 23958 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 133645612 is about 11560.5195384983. The cubic root of 133645612 is about 511.2714807760.

The spelling of 133645612 in words is "one hundred thirty-three million, six hundred forty-five thousand, six hundred twelve".