133885670 has 16 divisors (see below), whose sum is σ = 241381728. Its totient is φ = 53468160.

The previous prime is 133885643. The next prime is 133885679. The reversal of 133885670 is 76588331.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133885679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4034 + ... + 16853.

It is an arithmetic number, because the mean of its divisors is an integer number (15086358).

Almost surely, 2^133885670 is an apocalyptic number.

133885670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133885670 is a deficient number, since it is larger than the sum of its proper divisors (107496058).

133885670 is a wasteful number, since it uses less digits than its factorization.

133885670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21535.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 133885670 is about 11570.8975451345. The cubic root of 133885670 is about 511.5774177336.

The spelling of 133885670 in words is "one hundred thirty-three million, eight hundred eighty-five thousand, six hundred seventy".