133686634 has 8 divisors (see below), whose sum is σ = 200587968. Its totient is φ = 66823980.

The previous prime is 133686629. The next prime is 133686643. The reversal of 133686634 is 436686331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×133686634² = 35744232220499912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1599 + ... + 16429.

It is an arithmetic number, because the mean of its divisors is an integer number (25073496).

Almost surely, 2^133686634 is an apocalyptic number.

133686634 is a deficient number, since it is larger than the sum of its proper divisors (66901334).

133686634 is a wasteful number, since it uses less digits than its factorization.

133686634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19340.

The product of its digits is 186624, while the sum is 40.

The square root of 133686634 is about 11562.2936305908. The cubic root of 133686634 is about 511.3237863545.

It can be divided in two parts, 13368 and 6634, that added together give a palindrome (20002).

The spelling of 133686634 in words is "one hundred thirty-three million, six hundred eighty-six thousand, six hundred thirty-four".