133688612 has 12 divisors (see below), whose sum is σ = 247717260. Its totient is φ = 62912256.

The previous prime is 133688593. The next prime is 133688641. The reversal of 133688612 is 216886331.

It can be written as a sum of positive squares in 2 ways, for example, as 119596096 + 14092516 = 10936^2 + 3754^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982937 + ... + 983072.

It is an arithmetic number, because the mean of its divisors is an integer number (20643105).

Almost surely, 2^133688612 is an apocalyptic number.

It is an amenable number.

133688612 is a deficient number, since it is larger than the sum of its proper divisors (114028648).

133688612 is a wasteful number, since it uses less digits than its factorization.

133688612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966030 (or 1966028 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 133688612 is about 11562.3791669362. The cubic root of 133688612 is about 511.3263081560.

The spelling of 133688612 in words is "one hundred thirty-three million, six hundred eighty-eight thousand, six hundred twelve".