133687065 has 24 divisors (see below), whose sum is σ = 227229120. Its totient is φ = 67103488.

The previous prime is 133686991. The next prime is 133687067. The reversal of 133687065 is 560786331.

It is not a de Polignac number, because 133687065 - 2¹¹ = 133685017 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133687067) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11085 + ... + 19754.

It is an arithmetic number, because the mean of its divisors is an integer number (9467880).

Almost surely, 2^133687065 is an apocalyptic number.

133687065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133687065 is a deficient number, since it is larger than the sum of its proper divisors (93542055).

133687065 is a wasteful number, since it uses less digits than its factorization.

133687065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30881 (or 30864 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 133687065 is about 11562.3122687462. The cubic root of 133687065 is about 511.3243358492.

The spelling of 133687065 in words is "one hundred thirty-three million, six hundred eighty-seven thousand, sixty-five".